80812506 has 8 divisors (see below), whose sum is σ = 161625024. Its totient is φ = 26937500.

The previous prime is 80812489. The next prime is 80812553. The reversal of 80812506 is 60521808.

It is a sphenic number, since it is the product of 3 distinct primes.

80812506 is an admirable number.

It is a super-2 number, since 2×80812506² = 13061322252000072, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6734370 + ... + 6734381.

It is an arithmetic number, because the mean of its divisors is an integer number (20203128).

Almost surely, 2^80812506 is an apocalyptic number.

80812506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

80812506 is a wasteful number, since it uses less digits than its factorization.

80812506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13468756.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 80812506 is about 8989.5776319024. The cubic root of 80812506 is about 432.3407697896.

It can be divided in two parts, 80812 and 506, that added together give a palindrome (81318).

The spelling of 80812506 in words is "eighty million, eight hundred twelve thousand, five hundred six".