80156444 has 12 divisors (see below), whose sum is σ = 142249968. Its totient is φ = 39513600.

The previous prime is 80156441. The next prime is 80156471. The reversal of 80156444 is 44465108.

It is a self number, because there is not a number n which added to its sum of digits gives 80156444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80156441) 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 3 ways as a sum of consecutive naturals, for example, 140837 + ... + 141404.

It is an arithmetic number, because the mean of its divisors is an integer number (11854164).

Almost surely, 2^80156444 is an apocalyptic number.

It is an amenable number.

80156444 is a deficient number, since it is larger than the sum of its proper divisors (62093524).

80156444 is a wasteful number, since it uses less digits than its factorization.

80156444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282316 (or 282314 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 80156444 is about 8953.0131240829. The cubic root of 80156444 is about 431.1676287681.

The spelling of 80156444 in words is "eighty million, one hundred fifty-six thousand, four hundred forty-four".