80732500 has 60 divisors (see below), whose sum is σ = 180892096. Its totient is φ = 31500000.

The previous prime is 80732497. The next prime is 80732513. The reversal of 80732500 is 523708.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 107125 + ... + 107875.

Almost surely, 2^80732500 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 80732500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90446048).

80732500 is an abundant number, since it is smaller than the sum of its proper divisors (100159596).

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

80732500 is a wasteful number, since it uses less digits than its factorization.

80732500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 80732500 is about 8985.1265989968. The cubic root of 80732500 is about 432.1980473386.

The spelling of 80732500 in words is "eighty million, seven hundred thirty-two thousand, five hundred".