77742284 has 6 divisors (see below), whose sum is σ = 136049004. Its totient is φ = 38871140.

The previous prime is 77742257. The next prime is 77742289. The reversal of 77742284 is 48224777.

It is not an unprimeable number, because it can be changed into a prime (77742289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9717782 + ... + 9717789.

It is an arithmetic number, because the mean of its divisors is an integer number (22674834).

Almost surely, 2^77742284 is an apocalyptic number.

It is an amenable number.

77742284 is a deficient number, since it is larger than the sum of its proper divisors (58306720).

77742284 is a wasteful number, since it uses less digits than its factorization.

77742284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19435575 (or 19435573 counting only the distinct ones).

The product of its digits is 175616, while the sum is 41.

The square root of 77742284 is about 8817.1584991992. The cubic root of 77742284 is about 426.7947795080.

The spelling of 77742284 in words is "seventy-seven million, seven hundred forty-two thousand, two hundred eighty-four".