23612540 has 48 divisors (see below), whose sum is σ = 56996352. Its totient is φ = 8049216.

The previous prime is 23612531. The next prime is 23612591. The reversal of 23612540 is 4521632.

It is a congruent number.

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, 31409 + ... + 32151.

It is an arithmetic number, because the mean of its divisors is an integer number (1187424).

Almost surely, 2^23612540 is an apocalyptic number.

23612540 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 23612540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28498176).

23612540 is an abundant number, since it is smaller than the sum of its proper divisors (33383812).

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

23612540 is a wasteful number, since it uses less digits than its factorization.

23612540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986 (or 984 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 23612540 is about 4859.2736082670. The cubic root of 23612540 is about 286.8892238412.

The spelling of 23612540 in words is "twenty-three million, six hundred twelve thousand, five hundred forty".