77771130 has 32 divisors (see below), whose sum is σ = 187113024. Its totient is φ = 20687616.

The previous prime is 77771129. The next prime is 77771149. The reversal of 77771130 is 3117777.

It is a super-2 number, since 2×77771130² = 12096697322953800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77771091 and 77771100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9997 + ... + 15983.

It is an arithmetic number, because the mean of its divisors is an integer number (5847282).

Almost surely, 2^77771130 is an apocalyptic number.

77771130 is an abundant number, since it is smaller than the sum of its proper divisors (109341894).

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

77771130 is a wasteful number, since it uses less digits than its factorization.

77771130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6430.

The product of its (nonzero) digits is 7203, while the sum is 33.

The square root of 77771130 is about 8818.7941352545. The cubic root of 77771130 is about 426.8475598793.

The spelling of 77771130 in words is "seventy-seven million, seven hundred seventy-one thousand, one hundred thirty".