74147028 has 24 divisors (see below), whose sum is σ = 173154240. Its totient is φ = 24695040.

The previous prime is 74147027. The next prime is 74147039. The reversal of 74147028 is 82074147.

It is a super-2 number, since 2×74147028² = 10995563522465568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74147028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74147023) by changing a digit.

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, 21033 + ... + 24303.

It is an arithmetic number, because the mean of its divisors is an integer number (7214760).

Almost surely, 2^74147028 is an apocalyptic number.

It is an amenable number.

74147028 is an abundant number, since it is smaller than the sum of its proper divisors (99007212).

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

74147028 is a wasteful number, since it uses less digits than its factorization.

74147028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5167 (or 5165 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 74147028 is about 8610.8668553172. The cubic root of 74147028 is about 420.1115123403. Note that the first 3 decimals are identical.

The spelling of 74147028 in words is "seventy-four million, one hundred forty-seven thousand, twenty-eight".