76744138 has 8 divisors (see below), whose sum is σ = 117565632. Its totient is φ = 37555596.

The previous prime is 76744133. The next prime is 76744141. The reversal of 76744138 is 83144767.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×76744138³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 76744138.

It is not an unprimeable number, because it can be changed into a prime (76744133) 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 3 ways as a sum of consecutive naturals, for example, 408120 + ... + 408307.

It is an arithmetic number, because the mean of its divisors is an integer number (14695704).

Almost surely, 2^76744138 is an apocalyptic number.

76744138 is a deficient number, since it is larger than the sum of its proper divisors (40821494).

76744138 is a wasteful number, since it uses less digits than its factorization.

76744138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816476.

The product of its digits is 112896, while the sum is 40.

The square root of 76744138 is about 8760.3731655678. The cubic root of 76744138 is about 424.9603432432.

The spelling of 76744138 in words is "seventy-six million, seven hundred forty-four thousand, one hundred thirty-eight".