23206656 has 144 divisors (see below), whose sum is σ = 70051968. Its totient is φ = 6758400.

The previous prime is 23206643. The next prime is 23206727. The reversal of 23206656 is 65660232.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346335 + ... + 346401.

It is an arithmetic number, because the mean of its divisors is an integer number (486472).

Almost surely, 2^23206656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23206656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35025984).

23206656 is an abundant number, since it is smaller than the sum of its proper divisors (46845312).

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

23206656 is a wasteful number, since it uses less digits than its factorization.

23206656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 23206656 is about 4817.3287203594. The cubic root of 23206656 is about 285.2359019446.

Adding to 23206656 its reverse (65660232), we get a palindrome (88866888).

The spelling of 23206656 in words is "twenty-three million, two hundred six thousand, six hundred fifty-six".