74615138 has 8 divisors (see below), whose sum is σ = 120532188. Its totient is φ = 34437744.

The previous prime is 74615089. The next prime is 74615161. The reversal of 74615138 is 83151647.

It can be written as a sum of positive squares in 2 ways, for example, as 69338929 + 5276209 = 8327^2 + 2297^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 74615098 and 74615107.

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 3 ways as a sum of consecutive naturals, for example, 1434881 + ... + 1434932.

Almost surely, 2^74615138 is an apocalyptic number.

74615138 is a deficient number, since it is larger than the sum of its proper divisors (45917050).

74615138 is a wasteful number, since it uses less digits than its factorization.

74615138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2869828.

The product of its digits is 20160, while the sum is 35.

The square root of 74615138 is about 8638.0054410726. The cubic root of 74615138 is about 420.9937504127.

The spelling of 74615138 in words is "seventy-four million, six hundred fifteen thousand, one hundred thirty-eight".