74428831 has 8 divisors (see below), whose sum is σ = 75535200. Its totient is φ = 73328640.

The previous prime is 74428813. The next prime is 74428841. The reversal of 74428831 is 13882447.

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

It is a cyclic number.

It is not a de Polignac number, because 74428831 - 2¹⁷ = 74297759 is a prime.

It is a super-2 number, since 2×74428831² = 11079301768053122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74428841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26335 + ... + 29023.

It is an arithmetic number, because the mean of its divisors is an integer number (9441900).

Almost surely, 2^74428831 is an apocalyptic number.

74428831 is a deficient number, since it is larger than the sum of its proper divisors (1106369).

74428831 is a wasteful number, since it uses less digits than its factorization.

74428831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3089.

The product of its digits is 43008, while the sum is 37.

The square root of 74428831 is about 8627.2145562748. The cubic root of 74428831 is about 420.6430644066.

The spelling of 74428831 in words is "seventy-four million, four hundred twenty-eight thousand, eight hundred thirty-one".