13081980 has 48 divisors (see below), whose sum is σ = 37416960. Its totient is φ = 3413568.

The previous prime is 13081973. The next prime is 13081997. The reversal of 13081980 is 8918031.

It is a super-2 number, since 2×13081980² = 342276401440800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 501 + ... + 5139.

It is an arithmetic number, because the mean of its divisors is an integer number (779520).

Almost surely, 2^13081980 is an apocalyptic number.

13081980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13081980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18708480).

13081980 is an abundant number, since it is smaller than the sum of its proper divisors (24334980).

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

13081980 is a wasteful number, since it uses less digits than its factorization.

13081980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4698 (or 4696 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 13081980 is about 3616.9019892720. The cubic root of 13081980 is about 235.6266960409.

The spelling of 13081980 in words is "thirteen million, eighty-one thousand, nine hundred eighty".