77841138 has 32 divisors (see below), whose sum is σ = 164275200. Its totient is φ = 24521616.

The previous prime is 77841121. The next prime is 77841167. The reversal of 77841138 is 83114877.

It is a junction number, because it is equal to n+sod(n) for n = 77841096 and 77841105.

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 15 ways as a sum of consecutive naturals, for example, 84243 + ... + 85161.

It is an arithmetic number, because the mean of its divisors is an integer number (5133600).

Almost surely, 2^77841138 is an apocalyptic number.

77841138 is an abundant number, since it is smaller than the sum of its proper divisors (86434062).

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

77841138 is a wasteful number, since it uses less digits than its factorization.

77841138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686.

The product of its digits is 37632, while the sum is 39.

The square root of 77841138 is about 8822.7624925530. The cubic root of 77841138 is about 426.9756013167.

The spelling of 77841138 in words is "seventy-seven million, eight hundred forty-one thousand, one hundred thirty-eight".