80644532 has 24 divisors (see below), whose sum is σ = 155929536. Its totient is φ = 36299648.

The previous prime is 80644513. The next prime is 80644541. The reversal of 80644532 is 23544608.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 24218 + ... + 27345.

It is an arithmetic number, because the mean of its divisors is an integer number (6497064).

Almost surely, 2^80644532 is an apocalyptic number.

It is an amenable number.

80644532 is a deficient number, since it is larger than the sum of its proper divisors (75285004).

80644532 is a wasteful number, since it uses less digits than its factorization.

80644532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51607 (or 51605 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 80644532 is about 8980.2300638681. The cubic root of 80644532 is about 432.0410126243.

The spelling of 80644532 in words is "eighty million, six hundred forty-four thousand, five hundred thirty-two".