80433644 has 6 divisors (see below), whose sum is σ = 140758884. Its totient is φ = 40216820.

The previous prime is 80433643. The next prime is 80433649. The reversal of 80433644 is 44633408.

It is a self number, because there is not a number n which added to its sum of digits gives 80433644.

It is not an unprimeable number, because it can be changed into a prime (80433641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10054202 + ... + 10054209.

It is an arithmetic number, because the mean of its divisors is an integer number (23459814).

Almost surely, 2^80433644 is an apocalyptic number.

It is an amenable number.

80433644 is a deficient number, since it is larger than the sum of its proper divisors (60325240).

80433644 is a wasteful number, since it uses less digits than its factorization.

80433644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20108415 (or 20108413 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 80433644 is about 8968.4805848036. The cubic root of 80433644 is about 431.6640835717.

The spelling of 80433644 in words is "eighty million, four hundred thirty-three thousand, six hundred forty-four".