74421831 has 16 divisors (see below), whose sum is σ = 108725760. Its totient is φ = 44905920.

The previous prime is 74421829. The next prime is 74421857. The reversal of 74421831 is 13812447.

It is not a de Polignac number, because 74421831 - 2¹ = 74421829 is a prime.

It is a super-2 number, since 2×74421831² = 11077217858785122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74421881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2850 + ... + 12528.

It is an arithmetic number, because the mean of its divisors is an integer number (6795360).

Almost surely, 2^74421831 is an apocalyptic number.

74421831 is a deficient number, since it is larger than the sum of its proper divisors (34303929).

74421831 is a wasteful number, since it uses less digits than its factorization.

74421831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9926.

The product of its digits is 5376, while the sum is 30.

The square root of 74421831 is about 8626.8088537999. The cubic root of 74421831 is about 420.6298768925.

The spelling of 74421831 in words is "seventy-four million, four hundred twenty-one thousand, eight hundred thirty-one".