80853732 has 72 divisors (see below), whose sum is σ = 212335032. Its totient is φ = 25920000.

The previous prime is 80853727. The next prime is 80853733. The reversal of 80853732 is 23735808.

It can be written as a sum of positive squares in 4 ways, for example, as 64256256 + 16597476 = 8016^2 + 4074^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (80853733) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134232 + ... + 134832.

Almost surely, 2^80853732 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80853732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106167516).

80853732 is an abundant number, since it is smaller than the sum of its proper divisors (131481300).

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

80853732 is a wasteful number, since it uses less digits than its factorization.

80853732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 80853732 is about 8991.8703282465. The cubic root of 80853732 is about 432.4142759478.

The spelling of 80853732 in words is "eighty million, eight hundred fifty-three thousand, seven hundred thirty-two".