74204728 has 96 divisors (see below), whose sum is σ = 170629200. Its totient is φ = 29887488.

The previous prime is 74204701. The next prime is 74204737. The reversal of 74204728 is 82740247.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 74204693 and 74204702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1578801 + ... + 1578847.

Almost surely, 2^74204728 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 74204728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85314600).

74204728 is an abundant number, since it is smaller than the sum of its proper divisors (96424472).

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

74204728 is a wasteful number, since it uses less digits than its factorization.

74204728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 74204728 is about 8614.2166213765. The cubic root of 74204728 is about 420.2204587126.

The spelling of 74204728 in words is "seventy-four million, two hundred four thousand, seven hundred twenty-eight".