13120620 has 24 divisors (see below), whose sum is σ = 36737904. Its totient is φ = 3498816.

The previous prime is 13120619. The next prime is 13120631. The reversal of 13120620 is 2602131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13120620.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109279 + ... + 109398.

It is an arithmetic number, because the mean of its divisors is an integer number (1530746).

Almost surely, 2^13120620 is an apocalyptic number.

13120620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13120620 is an abundant number, since it is smaller than the sum of its proper divisors (23617284).

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

13120620 is a wasteful number, since it uses less digits than its factorization.

13120620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218689 (or 218687 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 13120620 is about 3622.2396386766. The cubic root of 13120620 is about 235.8584567319.

Adding to 13120620 its reverse (2602131), we get a palindrome (15722751).

The spelling of 13120620 in words is "thirteen million, one hundred twenty thousand, six hundred twenty".