80520836 has 24 divisors (see below), whose sum is σ = 155252160. Its totient is φ = 36236000.

The previous prime is 80520827. The next prime is 80520851. The reversal of 80520836 is 63802508.

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, 4616 + ... + 13503.

It is an arithmetic number, because the mean of its divisors is an integer number (6468840).

Almost surely, 2^80520836 is an apocalyptic number.

It is an amenable number.

80520836 is a deficient number, since it is larger than the sum of its proper divisors (74731324).

80520836 is a wasteful number, since it uses less digits than its factorization.

80520836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18235 (or 18233 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 80520836 is about 8973.3402922212. The cubic root of 80520836 is about 431.8200053189.

Multiplying 80520836 by its sum of digits (32), we get a palindrome (2576666752).

The spelling of 80520836 in words is "eighty million, five hundred twenty thousand, eight hundred thirty-six".