76445280 has 72 divisors (see below), whose sum is σ = 260874432. Its totient is φ = 20385024.

The previous prime is 76445273. The next prime is 76445321. The reversal of 76445280 is 8254467.

76445280 is a `hidden beast` number, since 7 + 644 + 5 + 2 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25104 + ... + 27983.

It is an arithmetic number, because the mean of its divisors is an integer number (3623256).

Almost surely, 2^76445280 is an apocalyptic number.

It is an amenable number.

76445280 is an abundant number, since it is smaller than the sum of its proper divisors (184429152).

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

76445280 is a wasteful number, since it uses less digits than its factorization.

76445280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53108 (or 53097 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 76445280 is about 8743.2991484908. The cubic root of 76445280 is about 424.4079969759.

The spelling of 76445280 in words is "seventy-six million, four hundred forty-five thousand, two hundred eighty".