77395872 has 48 divisors (see below), whose sum is σ = 207900000. Its totient is φ = 25197312.

The previous prime is 77395859. The next prime is 77395889. The reversal of 77395872 is 27859377.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5247 + ... + 13502.

It is an arithmetic number, because the mean of its divisors is an integer number (4331250).

Almost surely, 2^77395872 is an apocalyptic number.

It is an amenable number.

77395872 is an abundant number, since it is smaller than the sum of its proper divisors (130504128).

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

77395872 is a wasteful number, since it uses less digits than its factorization.

77395872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18805 (or 18797 counting only the distinct ones).

The product of its digits is 740880, while the sum is 48.

The square root of 77395872 is about 8797.4923699882. The cubic root of 77395872 is about 426.1599170378.

The spelling of 77395872 in words is "seventy-seven million, three hundred ninety-five thousand, eight hundred seventy-two".