77342736 has 20 divisors (see below), whose sum is σ = 199802192. Its totient is φ = 25780896.

The previous prime is 77342731. The next prime is 77342747. The reversal of 77342736 is 63724377.

It is a junction number, because it is equal to n+sod(n) for n = 77342694 and 77342703.

It is not an unprimeable number, because it can be changed into a prime (77342731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805606 + ... + 805701.

Almost surely, 2^77342736 is an apocalyptic number.

It is an amenable number.

77342736 is an abundant number, since it is smaller than the sum of its proper divisors (122459456).

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

77342736 is a wasteful number, since it uses less digits than its factorization.

77342736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611318 (or 1611312 counting only the distinct ones).

The product of its digits is 148176, while the sum is 39.

The square root of 77342736 is about 8794.4719000063. The cubic root of 77342736 is about 426.0623682628.

The spelling of 77342736 in words is "seventy-seven million, three hundred forty-two thousand, seven hundred thirty-six".