77900304 has 80 divisors (see below), whose sum is σ = 213329600. Its totient is φ = 24427008.

The previous prime is 77900269. The next prime is 77900309. The reversal of 77900304 is 40300977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77900309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208662 + ... + 209034.

It is an arithmetic number, because the mean of its divisors is an integer number (2666620).

Almost surely, 2^77900304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77900304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106664800).

77900304 is an abundant number, since it is smaller than the sum of its proper divisors (135429296).

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

77900304 is a wasteful number, since it uses less digits than its factorization.

77900304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 77900304 is about 8826.1148870837. The cubic root of 77900304 is about 427.0837533866.

The spelling of 77900304 in words is "seventy-seven million, nine hundred thousand, three hundred four".