74438481 has 8 divisors (see below), whose sum is σ = 106886080. Its totient is φ = 45808272.

The previous prime is 74438473. The next prime is 74438513. The reversal of 74438481 is 18483447.

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

It is not a de Polignac number, because 74438481 - 2³ = 74438473 is a prime.

It is a super-2 number, since 2×74438481² = 11082174907174722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1908679 = 74438481 / (7 + 4 + 4 + 3 + 8 + 4 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74430481) 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, 954301 + ... + 954378.

It is an arithmetic number, because the mean of its divisors is an integer number (13360760).

Almost surely, 2^74438481 is an apocalyptic number.

It is an amenable number.

74438481 is a deficient number, since it is larger than the sum of its proper divisors (32447599).

74438481 is a wasteful number, since it uses less digits than its factorization.

74438481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908695.

The product of its digits is 86016, while the sum is 39.

The square root of 74438481 is about 8627.7738148378. The cubic root of 74438481 is about 420.6612429811.

The spelling of 74438481 in words is "seventy-four million, four hundred thirty-eight thousand, four hundred eighty-one".