8131980 has 24 divisors (see below), whose sum is σ = 22769712. Its totient is φ = 2168512.

The previous prime is 8131969. The next prime is 8131993. The reversal of 8131980 is 891318.

It is a super-2 number, since 2×8131980² = 132258197440800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67707 + ... + 67826.

It is an arithmetic number, because the mean of its divisors is an integer number (948738).

Almost surely, 2^8131980 is an apocalyptic number.

It is an amenable number.

8131980 is an abundant number, since it is smaller than the sum of its proper divisors (14637732).

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

8131980 is a wasteful number, since it uses less digits than its factorization.

8131980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135545 (or 135543 counting only the distinct ones).

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

The square root of 8131980 is about 2851.6626728980. The cubic root of 8131980 is about 201.0938399973.

The spelling of 8131980 in words is "eight million, one hundred thirty-one thousand, nine hundred eighty".