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23895040 = 210513359
BaseRepresentation
bin101101100100…
…1110000000000
31122221222211111
41123021300000
522104120130
62212053104
7410050561
oct133116000
948858744
1023895040
1112540774
128004194
134c482a0
143260168
15217002a
hex16c9c00

23895040 has 88 divisors (see below), whose sum is σ = 61901280. Its totient is φ = 8798208.

The previous prime is 23895037. The next prime is 23895049. The reversal of 23895040 is 4059832.

It is a junction number, because it is equal to n+sod(n) for n = 23894993 and 23895011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23895049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66381 + ... + 66739.

Almost surely, 223895040 is an apocalyptic number.

23895040 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 23895040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30950640).

23895040 is an abundant number, since it is smaller than the sum of its proper divisors (38006240).

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

23895040 is a wasteful number, since it uses less digits than its factorization.

23895040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 23895040 is about 4888.2553124811. The cubic root of 23895040 is about 288.0288037035.

The spelling of 23895040 in words is "twenty-three million, eight hundred ninety-five thousand, forty".

Divisors: 1 2 4 5 8 10 13 16 20 26 32 40 52 64 65 80 104 128 130 160 208 256 260 320 359 416 512 520 640 718 832 1024 1040 1280 1436 1664 1795 2080 2560 2872 3328 3590 4160 4667 5120 5744 6656 7180 8320 9334 11488 13312 14360 16640 18668 22976 23335 28720 33280 37336 45952 46670 57440 66560 74672 91904 93340 114880 149344 183808 186680 229760 298688 367616 373360 459520 597376 746720 919040 1194752 1493440 1838080 2389504 2986880 4779008 5973760 11947520 23895040