76728020 has 12 divisors (see below), whose sum is σ = 161128884. Its totient is φ = 30691200.

The previous prime is 76728011. The next prime is 76728049. The reversal of 76728020 is 2082767.

It can be written as a sum of positive squares in 2 ways, for example, as 18541636 + 58186384 = 4306^2 + 7628^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1918181 + ... + 1918220.

It is an arithmetic number, because the mean of its divisors is an integer number (13427407).

Almost surely, 2^76728020 is an apocalyptic number.

It is an amenable number.

76728020 is an abundant number, since it is smaller than the sum of its proper divisors (84400864).

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

76728020 is a wasteful number, since it uses less digits than its factorization.

76728020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3836410 (or 3836408 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 76728020 is about 8759.4531792801. The cubic root of 76728020 is about 424.9305907411.

The spelling of 76728020 in words is "seventy-six million, seven hundred twenty-eight thousand, twenty".