77242764 has 36 divisors (see below), whose sum is σ = 191467304. Its totient is φ = 24231936.

The previous prime is 77242757. The next prime is 77242769. The reversal of 77242764 is 46724277.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (77242769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7669 + ... + 14604.

Almost surely, 2^77242764 is an apocalyptic number.

It is an amenable number.

77242764 is an abundant number, since it is smaller than the sum of its proper divisors (114224540).

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

77242764 is a wasteful number, since it uses less digits than its factorization.

77242764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22314 (or 22295 counting only the distinct ones).

The product of its digits is 131712, while the sum is 39.

The square root of 77242764 is about 8788.7862643257. The cubic root of 77242764 is about 425.8787152799.

The spelling of 77242764 in words is "seventy-seven million, two hundred forty-two thousand, seven hundred sixty-four".