13520620 has 12 divisors (see below), whose sum is σ = 28393344. Its totient is φ = 5408240.

The previous prime is 13520603. The next prime is 13520653. The reversal of 13520620 is 2602531.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337996 + ... + 338035.

It is an arithmetic number, because the mean of its divisors is an integer number (2366112).

Almost surely, 2^13520620 is an apocalyptic number.

13520620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13520620 is an abundant number, since it is smaller than the sum of its proper divisors (14872724).

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

13520620 is a wasteful number, since it uses less digits than its factorization.

13520620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676040 (or 676038 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13520620 is about 3677.0395700890. The cubic root of 13520620 is about 238.2313265311.

The spelling of 13520620 in words is "thirteen million, five hundred twenty thousand, six hundred twenty".