23257680 has 40 divisors (see below), whose sum is σ = 72099552. Its totient is φ = 6201984.

The previous prime is 23257673. The next prime is 23257693. The reversal of 23257680 is 8675232.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48214 + ... + 48693.

Almost surely, 2^23257680 is an apocalyptic number.

23257680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23257680 is an abundant number, since it is smaller than the sum of its proper divisors (48841872).

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

23257680 is a wasteful number, since it uses less digits than its factorization.

23257680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96923 (or 96917 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 23257680 is about 4822.6216936434. The cubic root of 23257680 is about 285.4447963703. Note that the first 3 decimals are identical.

The spelling of 23257680 in words is "twenty-three million, two hundred fifty-seven thousand, six hundred eighty".