77733474 has 32 divisors (see below), whose sum is σ = 191345280. Its totient is φ = 20500992.

The previous prime is 77733443. The next prime is 77733497. The reversal of 77733474 is 47433777.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 15 ways as a sum of consecutive naturals, for example, 70639 + ... + 71730.

It is an arithmetic number, because the mean of its divisors is an integer number (5979540).

Almost surely, 2^77733474 is an apocalyptic number.

77733474 is an abundant number, since it is smaller than the sum of its proper divisors (113611806).

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

77733474 is a wasteful number, since it uses less digits than its factorization.

77733474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142394.

The product of its digits is 345744, while the sum is 42.

The square root of 77733474 is about 8816.6588909859. The cubic root of 77733474 is about 426.7786569903.

The spelling of 77733474 in words is "seventy-seven million, seven hundred thirty-three thousand, four hundred seventy-four".