80491512 has 16 divisors (see below), whose sum is σ = 201228840. Its totient is φ = 26830496.

The previous prime is 80491507. The next prime is 80491529. The reversal of 80491512 is 21519408.

It is a happy number.

It is a super-2 number, since 2×80491512² = 12957767008092288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80491512.

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, 1676883 + ... + 1676930.

Almost surely, 2^80491512 is an apocalyptic number.

It is an amenable number.

80491512 is an abundant number, since it is smaller than the sum of its proper divisors (120737328).

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

80491512 is a wasteful number, since it uses less digits than its factorization.

80491512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353822 (or 3353818 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 80491512 is about 8971.7061922468. The cubic root of 80491512 is about 431.7675790239.

It can be divided in two parts, 80491 and 512, that added together give a triangular number (81003 = T₄₀₂).

The spelling of 80491512 in words is "eighty million, four hundred ninety-one thousand, five hundred twelve".