77630240 has 48 divisors (see below), whose sum is σ = 183943872. Its totient is φ = 30960384.

The previous prime is 77630239. The next prime is 77630251. The reversal of 77630240 is 4203677.

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, 87077 + ... + 87963.

It is an arithmetic number, because the mean of its divisors is an integer number (3832164).

Almost surely, 2^77630240 is an apocalyptic number.

It is an amenable number.

77630240 is an abundant number, since it is smaller than the sum of its proper divisors (106313632).

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

77630240 is a wasteful number, since it uses less digits than its factorization.

77630240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449 (or 1441 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 77630240 is about 8810.8024606162. The cubic root of 77630240 is about 426.5896453853.

The spelling of 77630240 in words is "seventy-seven million, six hundred thirty thousand, two hundred forty".