77923734 has 16 divisors (see below), whose sum is σ = 178111488. Its totient is φ = 22263912.

The previous prime is 77923717. The next prime is 77923751. The reversal of 77923734 is 43732977.

It is an interprime number because it is at equal distance from previous prime (77923717) and next prime (77923751).

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1855327 = 77923734 / (7 + 7 + 9 + 2 + 3 + 7 + 3 + 4).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 927622 + ... + 927705.

It is an arithmetic number, because the mean of its divisors is an integer number (11131968).

Almost surely, 2^77923734 is an apocalyptic number.

77923734 is an abundant number, since it is smaller than the sum of its proper divisors (100187754).

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

77923734 is a wasteful number, since it uses less digits than its factorization.

77923734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855339.

The product of its digits is 222264, while the sum is 42.

The square root of 77923734 is about 8827.4420983658. The cubic root of 77923734 is about 427.1265669520.

The spelling of 77923734 in words is "seventy-seven million, nine hundred twenty-three thousand, seven hundred thirty-four".