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23254681 = 31750151
BaseRepresentation
bin101100010110…
…1011010011001
31121202110102111
41120231122121
521423122211
62150232321
7401442622
oct130553231
947673374
1023254681
111214364a
1279556a1
134a82988
143134a49
152095421
hex162d699

23254681 has 4 divisors (see below), whose sum is σ = 24004864. Its totient is φ = 22504500.

The previous prime is 23254669. The next prime is 23254697. The reversal of 23254681 is 18645232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23254681 - 221 = 21157529 is a prime.

It is a super-2 number, since 2×232546812 = 1081560376823522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 750151 = 23254681 / (2 + 3 + 2 + 5 + 4 + 6 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23254601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375045 + ... + 375106.

It is an arithmetic number, because the mean of its divisors is an integer number (6001216).

Almost surely, 223254681 is an apocalyptic number.

It is an amenable number.

23254681 is a deficient number, since it is larger than the sum of its proper divisors (750183).

23254681 is an equidigital number, since it uses as much as digits as its factorization.

23254681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750182.

The product of its digits is 11520, while the sum is 31.

The square root of 23254681 is about 4822.3107531556. The cubic root of 23254681 is about 285.4325267925.

The spelling of 23254681 in words is "twenty-three million, two hundred fifty-four thousand, six hundred eighty-one".

Divisors: 1 31 750151 23254681