23674640 has 40 divisors (see below), whose sum is σ = 60049728. Its totient is φ = 8608640.

The previous prime is 23674631. The next prime is 23674661. The reversal of 23674640 is 4647632.

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

It is a junction number, because it is equal to n+sod(n) for n = 23674597 and 23674606.

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, 12572 + ... + 14331.

Almost surely, 2^23674640 is an apocalyptic number.

23674640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23674640 is an abundant number, since it is smaller than the sum of its proper divisors (36375088).

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

23674640 is a wasteful number, since it uses less digits than its factorization.

23674640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26927 (or 26921 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 23674640 is about 4865.6592564626. The cubic root of 23674640 is about 287.1405059324.

It can be divided in two parts, 2367 and 4640, that added together give a palindrome (7007).

The spelling of 23674640 in words is "twenty-three million, six hundred seventy-four thousand, six hundred forty".