23425640 has 32 divisors (see below), whose sum is σ = 60238080. Its totient is φ = 8031552.

The previous prime is 23425573. The next prime is 23425663. The reversal of 23425640 is 4652432.

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, 41552 + ... + 42111.

It is an arithmetic number, because the mean of its divisors is an integer number (1882440).

Almost surely, 2^23425640 is an apocalyptic number.

23425640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23425640 is an abundant number, since it is smaller than the sum of its proper divisors (36812440).

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

23425640 is a wasteful number, since it uses less digits than its factorization.

23425640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83681 (or 83677 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 23425640 is about 4840.0041322296. The cubic root of 23425640 is about 286.1302811661.

The spelling of 23425640 in words is "twenty-three million, four hundred twenty-five thousand, six hundred forty".