74028438 has 64 divisors (see below), whose sum is σ = 190045440. Its totient is φ = 21110400.

The previous prime is 74028419. The next prime is 74028473. The reversal of 74028438 is 83482047.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 6433 + ... + 13763.

It is an arithmetic number, because the mean of its divisors is an integer number (2969460).

Almost surely, 2^74028438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74028438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95022720).

74028438 is an abundant number, since it is smaller than the sum of its proper divisors (116017002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74028438 is a wasteful number, since it uses less digits than its factorization.

74028438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7370 (or 7364 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 74028438 is about 8603.9780334448. The cubic root of 74028438 is about 419.8874188048.

The spelling of 74028438 in words is "seventy-four million, twenty-eight thousand, four hundred thirty-eight".