13612620 has 48 divisors (see below), whose sum is σ = 43561728. Its totient is φ = 3111360.

The previous prime is 13612609. The next prime is 13612667. The reversal of 13612620 is 2621631.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 15786 + ... + 16625.

It is an arithmetic number, because the mean of its divisors is an integer number (907536).

Almost surely, 2^13612620 is an apocalyptic number.

13612620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13612620 is an abundant number, since it is smaller than the sum of its proper divisors (29949108).

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

13612620 is a wasteful number, since it uses less digits than its factorization.

13612620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32430 (or 32428 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 13612620 is about 3689.5284251514. The cubic root of 13612620 is about 238.7704477064.

The spelling of 13612620 in words is "thirteen million, six hundred twelve thousand, six hundred twenty".