76122780 has 24 divisors (see below), whose sum is σ = 213143952. Its totient is φ = 20299392.

The previous prime is 76122769. The next prime is 76122829. The reversal of 76122780 is 8722167.

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 7 ways as a sum of consecutive naturals, for example, 634297 + ... + 634416.

It is an arithmetic number, because the mean of its divisors is an integer number (8880998).

Almost surely, 2^76122780 is an apocalyptic number.

It is an amenable number.

76122780 is an abundant number, since it is smaller than the sum of its proper divisors (137021172).

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

76122780 is a wasteful number, since it uses less digits than its factorization.

76122780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268725 (or 1268723 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 76122780 is about 8724.8369612274. The cubic root of 76122780 is about 423.8103385159.

The spelling of 76122780 in words is "seventy-six million, one hundred twenty-two thousand, seven hundred eighty".