80628931 has 4 divisors (see below), whose sum is σ = 81051264. Its totient is φ = 80206600.

The previous prime is 80628929. The next prime is 80628941. The reversal of 80628931 is 13982608.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80628931 - 2¹ = 80628929 is a prime.

It is a super-2 number, since 2×80628931² = 13002049028405522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80628941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210880 + ... + 211261.

It is an arithmetic number, because the mean of its divisors is an integer number (20262816).

Almost surely, 2^80628931 is an apocalyptic number.

80628931 is a deficient number, since it is larger than the sum of its proper divisors (422333).

80628931 is a wasteful number, since it uses less digits than its factorization.

80628931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422332.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 80628931 is about 8979.3613915467. The cubic root of 80628931 is about 432.0131508199.

The spelling of 80628931 in words is "eighty million, six hundred twenty-eight thousand, nine hundred thirty-one".