80921204 has 24 divisors (see below), whose sum is σ = 174292608. Its totient is φ = 32012640.

The previous prime is 80921149. The next prime is 80921237. The reversal of 80921204 is 40212908.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 110792 + ... + 111519.

It is an arithmetic number, because the mean of its divisors is an integer number (7262192).

Almost surely, 2^80921204 is an apocalyptic number.

It is an amenable number.

80921204 is an abundant number, since it is smaller than the sum of its proper divisors (93371404).

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

80921204 is a wasteful number, since it uses less digits than its factorization.

80921204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222335 (or 222333 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 80921204 is about 8995.6213793156. The cubic root of 80921204 is about 432.5345249595.

The spelling of 80921204 in words is "eighty million, nine hundred twenty-one thousand, two hundred four".