74049731 has 36 divisors (see below), whose sum is σ = 94282560. Its totient is φ = 57859200.

The previous prime is 74049721. The next prime is 74049737. The reversal of 74049731 is 13794047.

It is a de Polignac number, because none of the positive numbers 2^k-74049731 is a prime.

It is a super-2 number, since 2×74049731² = 10966725322344722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74049691 and 74049700.

It is not an unprimeable number, because it can be changed into a prime (74049737) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 1806071 + ... + 1806111.

It is an arithmetic number, because the mean of its divisors is an integer number (2618960).

Almost surely, 2^74049731 is an apocalyptic number.

74049731 is a deficient number, since it is larger than the sum of its proper divisors (20232829).

74049731 is a wasteful number, since it uses less digits than its factorization.

74049731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 74049731 is about 8605.2153372243. The cubic root of 74049731 is about 419.9276727306.

The spelling of 74049731 in words is "seventy-four million, forty-nine thousand, seven hundred thirty-one".