13620072 has 32 divisors (see below), whose sum is σ = 34534080. Its totient is φ = 4475520.

The previous prime is 13620059. The next prime is 13620073. The reversal of 13620072 is 27002631.

It is a happy number.

It is a super-2 number, since 2×13620072² = 371012722570368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13620073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2293 + ... + 5700.

It is an arithmetic number, because the mean of its divisors is an integer number (1079190).

Almost surely, 2^13620072 is an apocalyptic number.

13620072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13620072 is an abundant number, since it is smaller than the sum of its proper divisors (20914008).

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

13620072 is a wasteful number, since it uses less digits than its factorization.

13620072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8073 (or 8069 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 13620072 is about 3690.5381721370. The cubic root of 13620072 is about 238.8140100476.

The spelling of 13620072 in words is "thirteen million, six hundred twenty thousand, seventy-two".