74438731 has 8 divisors (see below), whose sum is σ = 75018240. Its totient is φ = 73861992.

The previous prime is 74438711. The next prime is 74438753. The reversal of 74438731 is 13783447.

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 74438731 - 2¹⁵ = 74405963 is a prime.

It is a super-2 number, since 2×74438731² = 11082249345780722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74438711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100360 + ... + 101098.

It is an arithmetic number, because the mean of its divisors is an integer number (9377280).

Almost surely, 2^74438731 is an apocalyptic number.

74438731 is a deficient number, since it is larger than the sum of its proper divisors (579509).

74438731 is a wasteful number, since it uses less digits than its factorization.

74438731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385.

The product of its digits is 56448, while the sum is 37.

The square root of 74438731 is about 8627.7883029198. The cubic root of 74438731 is about 420.6617139078.

The spelling of 74438731 in words is "seventy-four million, four hundred thirty-eight thousand, seven hundred thirty-one".