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23020000 = 25541151
BaseRepresentation
bin101011111010…
…0000111100000
31121022112111121
41113310013200
521343120000
62141222024
7366444463
oct127640740
947275447
1023020000
1111aa32a3
127861914
1349ccc03
1430b32da
15204ab1a
hex15f41e0

23020000 has 60 divisors (see below), whose sum is σ = 56681856. Its totient is φ = 9200000.

The previous prime is 23019979. The next prime is 23020009. The reversal of 23020000 is 2032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23020009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19425 + ... + 20575.

Almost surely, 223020000 is an apocalyptic number.

23020000 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 23020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28340928).

23020000 is an abundant number, since it is smaller than the sum of its proper divisors (33661856).

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

23020000 is an equidigital number, since it uses as much as digits as its factorization.

23020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 23020000 is about 4797.9162143581. The cubic root of 23020000 is about 284.4691050306.

Adding to 23020000 its reverse (2032), we get a palindrome (23022032).

The spelling of 23020000 in words is "twenty-three million, twenty thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 125 160 200 250 400 500 625 800 1000 1151 1250 2000 2302 2500 4000 4604 5000 5755 9208 10000 11510 18416 20000 23020 28775 36832 46040 57550 92080 115100 143875 184160 230200 287750 460400 575500 719375 920800 1151000 1438750 2302000 2877500 4604000 5755000 11510000 23020000