74275389 has 18 divisors (see below), whose sum is σ = 113235486. Its totient is φ = 46908720.

The previous prime is 74275387. The next prime is 74275417. The reversal of 74275389 is 98357247.

It can be written as a sum of positive squares in only one way, i.e., 73102500 + 1172889 = 8550^2 + 1083^2 .

It is not a de Polignac number, because 74275389 - 2¹ = 74275387 is a prime.

It is a super-2 number, since 2×74275389² = 11033666822202642, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) 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 (74275381) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8182 + ... + 14679.

Almost surely, 2^74275389 is an apocalyptic number.

It is an amenable number.

74275389 is a deficient number, since it is larger than the sum of its proper divisors (38960097).

74275389 is a wasteful number, since it uses less digits than its factorization.

74275389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22905 (or 22883 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 74275389 is about 8618.3170630930. The cubic root of 74275389 is about 420.3538005205.

The spelling of 74275389 in words is "seventy-four million, two hundred seventy-five thousand, three hundred eighty-nine".