80405372 has 12 divisors (see below), whose sum is σ = 141089256. Its totient is φ = 40094160.

The previous prime is 80405363. The next prime is 80405389. The reversal of 80405372 is 27350408.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25454 + ... + 28437.

It is an arithmetic number, because the mean of its divisors is an integer number (11757438).

Almost surely, 2^80405372 is an apocalyptic number.

It is an amenable number.

80405372 is a deficient number, since it is larger than the sum of its proper divisors (60683884).

80405372 is a wasteful number, since it uses less digits than its factorization.

80405372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54268 (or 54266 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 80405372 is about 8966.9042595536. The cubic root of 80405372 is about 431.6135017649.

The spelling of 80405372 in words is "eighty million, four hundred five thousand, three hundred seventy-two".