77074320 has 40 divisors (see below), whose sum is σ = 238931136. Its totient is φ = 20553088.

The previous prime is 77074289. The next prime is 77074337. The reversal of 77074320 is 2347077.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 160332 + ... + 160811.

Almost surely, 2^77074320 is an apocalyptic number.

It is an amenable number.

77074320 is an abundant number, since it is smaller than the sum of its proper divisors (161856816).

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

77074320 is a wasteful number, since it uses less digits than its factorization.

77074320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321159 (or 321153 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 30.

The square root of 77074320 is about 8779.1981410605. The cubic root of 77074320 is about 425.5689174447.

The spelling of 77074320 in words is "seventy-seven million, seventy-four thousand, three hundred twenty".