23570640 has 120 divisors (see below), whose sum is σ = 83372640. Its totient is φ = 5951232.

The previous prime is 23570639. The next prime is 23570681. The reversal of 23570640 is 4607532.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12819 + ... + 14541.

It is an arithmetic number, because the mean of its divisors is an integer number (694772).

Almost surely, 2^23570640 is an apocalyptic number.

23570640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23570640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41686320).

23570640 is an abundant number, since it is smaller than the sum of its proper divisors (59802000).

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

23570640 is a wasteful number, since it uses less digits than its factorization.

23570640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761 (or 1752 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 23570640 is about 4854.9603499926. The cubic root of 23570640 is about 286.7194302253.

The spelling of 23570640 in words is "twenty-three million, five hundred seventy thousand, six hundred forty".