Search a number
-
+
23072000 = 28537103
BaseRepresentation
bin101100000000…
…0110100000000
31121102011211112
41120000310000
521401301000
62142302452
7400052210
oct130006400
947364745
1023072000
1112029376
127887a28
134a1a793
1430c8240
15205b235
hex1600d00

23072000 has 144 divisors (see below), whose sum is σ = 66323712. Its totient is φ = 7833600.

The previous prime is 23071999. The next prime is 23072003. The reversal of 23072000 is 27032.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23072003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223949 + ... + 224051.

Almost surely, 223072000 is an apocalyptic number.

23072000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23072000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33161856).

23072000 is an abundant number, since it is smaller than the sum of its proper divisors (43251712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23072000 is an equidigital number, since it uses as much as digits as its factorization.

23072000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 23072000 is about 4803.3321767290. The cubic root of 23072000 is about 284.6831402060.

Adding to 23072000 its reverse (27032), we get a palindrome (23099032).

The spelling of 23072000 in words is "twenty-three million, seventy-two thousand".

Divisors: 1 2 4 5 7 8 10 14 16 20 25 28 32 35 40 50 56 64 70 80 100 103 112 125 128 140 160 175 200 206 224 250 256 280 320 350 400 412 448 500 515 560 640 700 721 800 824 875 896 1000 1030 1120 1280 1400 1442 1600 1648 1750 1792 2000 2060 2240 2575 2800 2884 3200 3296 3500 3605 4000 4120 4480 5150 5600 5768 6400 6592 7000 7210 8000 8240 8960 10300 11200 11536 12875 13184 14000 14420 16000 16480 18025 20600 22400 23072 25750 26368 28000 28840 32000 32960 36050 41200 44800 46144 51500 56000 57680 65920 72100 82400 90125 92288 103000 112000 115360 131840 144200 164800 180250 184576 206000 224000 230720 288400 329600 360500 412000 461440 576800 659200 721000 824000 922880 1153600 1442000 1648000 2307200 2884000 3296000 4614400 5768000 11536000 23072000