76720344 has 16 divisors (see below), whose sum is σ = 191800920. Its totient is φ = 25573440.

The previous prime is 76720331. The next prime is 76720361. The reversal of 76720344 is 44302767.

It is a super-2 number, since 2×76720344² = 11772022366956672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1598317 + ... + 1598364.

Almost surely, 2^76720344 is an apocalyptic number.

It is an amenable number.

76720344 is an abundant number, since it is smaller than the sum of its proper divisors (115080576).

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

76720344 is a wasteful number, since it uses less digits than its factorization.

76720344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3196690 (or 3196686 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 33.

The square root of 76720344 is about 8759.0150131165. The cubic root of 76720344 is about 424.9164200119.

Multiplying 76720344 by its sum of digits (33), we get a palindrome (2531771352).

The spelling of 76720344 in words is "seventy-six million, seven hundred twenty thousand, three hundred forty-four".