77872882 has 4 divisors (see below), whose sum is σ = 116809326. Its totient is φ = 38936440.

The previous prime is 77872867. The next prime is 77872931. The reversal of 77872882 is 28827877.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59305401 + 18567481 = 7701^2 + 4309^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19468219 + ... + 19468222.

Almost surely, 2^77872882 is an apocalyptic number.

77872882 is a deficient number, since it is larger than the sum of its proper divisors (38936444).

77872882 is a wasteful number, since it uses less digits than its factorization.

77872882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38936443.

The product of its digits is 702464, while the sum is 49.

The square root of 77872882 is about 8824.5612922116. The cubic root of 77872882 is about 427.0336343474.

The spelling of 77872882 in words is "seventy-seven million, eight hundred seventy-two thousand, eight hundred eighty-two".