23305256 has 32 divisors (see below), whose sum is σ = 49109760. Its totient is φ = 10287552.

The previous prime is 23305231. The next prime is 23305277. The reversal of 23305256 is 65250332.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2480 + ... + 7263.

It is an arithmetic number, because the mean of its divisors is an integer number (1534680).

Almost surely, 2^23305256 is an apocalyptic number.

23305256 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23305256 is an abundant number, since it is smaller than the sum of its proper divisors (25804504).

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

23305256 is a wasteful number, since it uses less digits than its factorization.

23305256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9785 (or 9781 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 23305256 is about 4827.5517604682. The cubic root of 23305256 is about 285.6392994643.

Adding to 23305256 its reverse (65250332), we get a palindrome (88555588).

The spelling of 23305256 in words is "twenty-three million, three hundred five thousand, two hundred fifty-six".