77630442 has 16 divisors (see below), whose sum is σ = 155426880. Its totient is φ = 25849152.

The previous prime is 77630431. The next prime is 77630453. The reversal of 77630442 is 24403677.

It is an interprime number because it is at equal distance from previous prime (77630431) and next prime (77630453).

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, 358 + ... + 12465.

It is an arithmetic number, because the mean of its divisors is an integer number (9714180).

Almost surely, 2^77630442 is an apocalyptic number.

77630442 is an abundant number, since it is smaller than the sum of its proper divisors (77796438).

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

77630442 is a wasteful number, since it uses less digits than its factorization.

77630442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13837.

The product of its (nonzero) digits is 28224, while the sum is 33.

The square root of 77630442 is about 8810.8139238098. The cubic root of 77630442 is about 426.5900153916.

The spelling of 77630442 in words is "seventy-seven million, six hundred thirty thousand, four hundred forty-two".