76726728 has 48 divisors (see below), whose sum is σ = 223789020. Its totient is φ = 23607936.

The previous prime is 76726717. The next prime is 76726733. The reversal of 76726728 is 82762767.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 66879684 + 9847044 = 8178^2 + 3138^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40051 + ... + 41922.

Almost surely, 2^76726728 is an apocalyptic number.

76726728 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

76726728 is an abundant number, since it is smaller than the sum of its proper divisors (147062292).

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

76726728 is a wasteful number, since it uses less digits than its factorization.

76726728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81998 (or 81991 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 76726728 is about 8759.3794300738. The cubic root of 76726728 is about 424.9282056350.

It can be divided in two parts, 7672 and 6728, that added together give a square (14400 = 120²).

The spelling of 76726728 in words is "seventy-six million, seven hundred twenty-six thousand, seven hundred twenty-eight".