76749820 has 24 divisors (see below), whose sum is σ = 184199904. Its totient is φ = 26314176.

The previous prime is 76749817. The next prime is 76749833. The reversal of 76749820 is 2894767.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273967 + ... + 274246.

It is an arithmetic number, because the mean of its divisors is an integer number (7674996).

Almost surely, 2^76749820 is an apocalyptic number.

76749820 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

76749820 is an abundant number, since it is smaller than the sum of its proper divisors (107450084).

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

76749820 is a wasteful number, since it uses less digits than its factorization.

76749820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548229 (or 548227 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 76749820 is about 8760.6974608190. The cubic root of 76749820 is about 424.9708307547.

The spelling of 76749820 in words is "seventy-six million, seven hundred forty-nine thousand, eight hundred twenty".