77383856 has 30 divisors (see below), whose sum is σ = 164804556. Its totient is φ = 35173600.

The previous prime is 77383829. The next prime is 77383871. The reversal of 77383856 is 65838377.

It is a super-2 number, since 2×77383856² = 11976522338857472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77383856.

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 5 ways as a sum of consecutive naturals, for example, 18050 + ... + 21921.

Almost surely, 2^77383856 is an apocalyptic number.

It is an amenable number.

77383856 is an abundant number, since it is smaller than the sum of its proper divisors (87420700).

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

77383856 is a wasteful number, since it uses less digits than its factorization.

77383856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40001 (or 39984 counting only the distinct ones).

The product of its digits is 846720, while the sum is 47.

The square root of 77383856 is about 8796.8094216028. The cubic root of 77383856 is about 426.1378615867.

The spelling of 77383856 in words is "seventy-seven million, three hundred eighty-three thousand, eight hundred fifty-six".