77742260 has 24 divisors (see below), whose sum is σ = 164000256. Its totient is φ = 30955680.

The previous prime is 77742257. The next prime is 77742289. The reversal of 77742260 is 6224777.

It is a self number, because there is not a number n which added to its sum of digits gives 77742260.

It is a congruent number.

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, 4256 + ... + 13175.

It is an arithmetic number, because the mean of its divisors is an integer number (6833344).

Almost surely, 2^77742260 is an apocalyptic number.

It is an amenable number.

77742260 is an abundant number, since it is smaller than the sum of its proper divisors (86257996).

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

77742260 is a wasteful number, since it uses less digits than its factorization.

77742260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17663 (or 17661 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 35.

The square root of 77742260 is about 8817.1571382164. The cubic root of 77742260 is about 426.7947355891.

The spelling of 77742260 in words is "seventy-seven million, seven hundred forty-two thousand, two hundred sixty".