80921460 has 48 divisors (see below), whose sum is σ = 230864256. Its totient is φ = 21171072.

The previous prime is 80921443. The next prime is 80921471. The reversal of 80921460 is 6412908.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9544 + ... + 15903.

It is an arithmetic number, because the mean of its divisors is an integer number (4809672).

Almost surely, 2^80921460 is an apocalyptic number.

It is an amenable number.

80921460 is an abundant number, since it is smaller than the sum of its proper divisors (149942796).

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

80921460 is a wasteful number, since it uses less digits than its factorization.

80921460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25512 (or 25510 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 80921460 is about 8995.6356084492. The cubic root of 80921460 is about 432.5349810770.

The spelling of 80921460 in words is "eighty million, nine hundred twenty-one thousand, four hundred sixty".