77130324 has 36 divisors (see below), whose sum is σ = 195351156. Its totient is φ = 25659648.

The previous prime is 77130299. The next prime is 77130331. The reversal of 77130324 is 42303177.

It can be written as a sum of positive squares in 2 ways, for example, as 15350724 + 61779600 = 3918^2 + 7860^2 .

It is a tau number, because it is divible by the number of its divisors (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, 19542 + ... + 23154.

It is an arithmetic number, because the mean of its divisors is an integer number (5426421).

Almost surely, 2^77130324 is an apocalyptic number.

It is an amenable number.

77130324 is an abundant number, since it is smaller than the sum of its proper divisors (118220832).

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

77130324 is a wasteful number, since it uses less digits than its factorization.

77130324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4216 (or 4211 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 77130324 is about 8782.3871470119. The cubic root of 77130324 is about 425.6719685920.

The spelling of 77130324 in words is "seventy-seven million, one hundred thirty thousand, three hundred twenty-four".