74828421 has 16 divisors (see below), whose sum is σ = 112950720. Its totient is φ = 48943440.

The previous prime is 74828399. The next prime is 74828423. The reversal of 74828421 is 12482847.

It is not a de Polignac number, because 74828421 - 2⁶ = 74828357 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74828423) 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 15 ways as a sum of consecutive naturals, for example, 24715 + ... + 27576.

It is an arithmetic number, because the mean of its divisors is an integer number (7059420).

Almost surely, 2^74828421 is an apocalyptic number.

It is an amenable number.

74828421 is a deficient number, since it is larger than the sum of its proper divisors (38122299).

74828421 is a wasteful number, since it uses less digits than its factorization.

74828421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52353 (or 52347 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 74828421 is about 8650.3422475645. The cubic root of 74828421 is about 421.3944974735.

The spelling of 74828421 in words is "seventy-four million, eight hundred twenty-eight thousand, four hundred twenty-one".