77381834 has 16 divisors (see below), whose sum is σ = 118914048. Its totient is φ = 37749072.

The previous prime is 77381833. The next prime is 77381839. The reversal of 77381834 is 43818377.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 77381791 and 77381800.

It is not an unprimeable number, because it can be changed into a prime (77381833) by changing a digit.

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, 33959 + ... + 36165.

It is an arithmetic number, because the mean of its divisors is an integer number (7432128).

Almost surely, 2^77381834 is an apocalyptic number.

77381834 is a deficient number, since it is larger than the sum of its proper divisors (41532214).

77381834 is a wasteful number, since it uses less digits than its factorization.

77381834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629.

The product of its digits is 112896, while the sum is 41.

The square root of 77381834 is about 8796.6944928194. The cubic root of 77381834 is about 426.1341499674.

The spelling of 77381834 in words is "seventy-seven million, three hundred eighty-one thousand, eight hundred thirty-four".