76979540 has 24 divisors (see below), whose sum is σ = 176353632. Its totient is φ = 27992480.

The previous prime is 76979531. The next prime is 76979557. The reversal of 76979540 is 4597967.

It is a super-2 number, since 2×76979540² = 11851699157223200, 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174734 + ... + 175173.

It is an arithmetic number, because the mean of its divisors is an integer number (7348068).

Almost surely, 2^76979540 is an apocalyptic number.

It is an amenable number.

76979540 is an abundant number, since it is smaller than the sum of its proper divisors (99374092).

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

76979540 is a wasteful number, since it uses less digits than its factorization.

76979540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349927 (or 349925 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 76979540 is about 8773.7984932411. The cubic root of 76979540 is about 425.3944020459.

The spelling of 76979540 in words is "seventy-six million, nine hundred seventy-nine thousand, five hundred forty".