77048520 has 32 divisors (see below), whose sum is σ = 231145920. Its totient is φ = 20546240.

The previous prime is 77048509. The next prime is 77048533. The reversal of 77048520 is 2584077.

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, 320916 + ... + 321155.

It is an arithmetic number, because the mean of its divisors is an integer number (7223310).

Almost surely, 2^77048520 is an apocalyptic number.

It is an amenable number.

77048520 is an abundant number, since it is smaller than the sum of its proper divisors (154097400).

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

77048520 is a wasteful number, since it uses less digits than its factorization.

77048520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642085 (or 642081 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 77048520 is about 8777.7286355868. The cubic root of 77048520 is about 425.5214269039.

The spelling of 77048520 in words is "seventy-seven million, forty-eight thousand, five hundred twenty".