80909574 has 16 divisors (see below), whose sum is σ = 165582912. Its totient is φ = 26342568.

The previous prime is 80909567. The next prime is 80909603. The reversal of 80909574 is 47590908.

It is a super-2 number, since 2×80909574² = 13092718329722952, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 156544 + ... + 157059.

It is an arithmetic number, because the mean of its divisors is an integer number (10348932).

Almost surely, 2^80909574 is an apocalyptic number.

80909574 is an abundant number, since it is smaller than the sum of its proper divisors (84673338).

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

80909574 is a wasteful number, since it uses less digits than its factorization.

80909574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313651.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 80909574 is about 8994.9749304820. The cubic root of 80909574 is about 432.5138026713.

The spelling of 80909574 in words is "eighty million, nine hundred nine thousand, five hundred seventy-four".