80812572 has 12 divisors (see below), whose sum is σ = 188562696. Its totient is φ = 26937520.

The previous prime is 80812559. The next prime is 80812583. The reversal of 80812572 is 27521808.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3367179 + ... + 3367202.

It is an arithmetic number, because the mean of its divisors is an integer number (15713558).

Almost surely, 2^80812572 is an apocalyptic number.

It is an amenable number.

80812572 is an abundant number, since it is smaller than the sum of its proper divisors (107750124).

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

80812572 is a wasteful number, since it uses less digits than its factorization.

80812572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6734388 (or 6734386 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 80812572 is about 8989.5813028194. The cubic root of 80812572 is about 432.3408874879.

The spelling of 80812572 in words is "eighty million, eight hundred twelve thousand, five hundred seventy-two".