80021115 has 48 divisors (see below), whose sum is σ = 146135808. Its totient is φ = 41998176.

The previous prime is 80021111. The next prime is 80021129. The reversal of 80021115 is 51112008.

It is not a de Polignac number, because 80021115 - 2² = 80021111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80021111) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 80914 + ... + 81896.

It is an arithmetic number, because the mean of its divisors is an integer number (3044496).

Almost surely, 2^80021115 is an apocalyptic number.

80021115 is a deficient number, since it is larger than the sum of its proper divisors (66114693).

80021115 is an equidigital number, since it uses as much as digits as its factorization.

80021115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070 (or 1058 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 80021115 is about 8945.4521965075. The cubic root of 80021115 is about 430.9248437454.

The spelling of 80021115 in words is "eighty million, twenty-one thousand, one hundred fifteen".