13056732220 has 24 divisors (see below), whose sum is σ = 31336157664. Its totient is φ = 4476593856.

The previous prime is 13056732217. The next prime is 13056732257. The reversal of 13056732220 is 2223765031.

It is a super-2 number, since 2×13056732220² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 46631047 + ... + 46631326.

It is an arithmetic number, because the mean of its divisors is an integer number (1305673236).

Almost surely, 2^13056732220 is an apocalyptic number.

13056732220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13056732220 is an abundant number, since it is smaller than the sum of its proper divisors (18279425444).

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

13056732220 is a wasteful number, since it uses less digits than its factorization.

13056732220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93262389 (or 93262387 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The spelling of 13056732220 in words is "thirteen billion, fifty-six million, seven hundred thirty-two thousand, two hundred twenty".