80040136 has 16 divisors (see below), whose sum is σ = 163718640. Its totient is φ = 36381840.

The previous prime is 80040133. The next prime is 80040151. The reversal of 80040136 is 63104008.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (80040133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454686 + ... + 454861.

It is an arithmetic number, because the mean of its divisors is an integer number (10232415).

Almost surely, 2^80040136 is an apocalyptic number.

It is an amenable number.

80040136 is an abundant number, since it is smaller than the sum of its proper divisors (83678504).

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

80040136 is a wasteful number, since it uses less digits than its factorization.

80040136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909564 (or 909560 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 80040136 is about 8946.5152992660. The cubic root of 80040136 is about 430.9589846181.

The spelling of 80040136 in words is "eighty million, forty thousand, one hundred thirty-six".