74669728 has 48 divisors (see below), whose sum is σ = 171460800. Its totient is φ = 31996608.

The previous prime is 74669719. The next prime is 74669759. The reversal of 74669728 is 82796647.

It is a Harshad number since it is a multiple of its sum of digits (49).

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 7 ways as a sum of consecutive naturals, for example, 7575 + ... + 14377.

It is an arithmetic number, because the mean of its divisors is an integer number (3572100).

Almost surely, 2^74669728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74669728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85730400).

74669728 is an abundant number, since it is smaller than the sum of its proper divisors (96791072).

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

74669728 is an equidigital number, since it uses as much as digits as its factorization.

74669728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6834 (or 6812 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 49.

The square root of 74669728 is about 8641.1647363073. The cubic root of 74669728 is about 421.0963946705.

The spelling of 74669728 in words is "seventy-four million, six hundred sixty-nine thousand, seven hundred twenty-eight".