74428575 has 48 divisors (see below), whose sum is σ = 138324480. Its totient is φ = 35038080.

The previous prime is 74428573. The next prime is 74428577. The reversal of 74428575 is 57582447.

It is an interprime number because it is at equal distance from previous prime (74428573) and next prime (74428577).

It is not a de Polignac number, because 74428575 - 2¹ = 74428573 is a prime.

It is a super-2 number, since 2×74428575² = 11079225553061250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74428573) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20766 + ... + 24084.

It is an arithmetic number, because the mean of its divisors is an integer number (2881760).

Almost surely, 2^74428575 is an apocalyptic number.

74428575 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

74428575 is a deficient number, since it is larger than the sum of its proper divisors (63895905).

74428575 is a wasteful number, since it uses less digits than its factorization.

74428575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368 (or 3363 counting only the distinct ones).

The product of its digits is 313600, while the sum is 42.

The square root of 74428575 is about 8627.1997194918. The cubic root of 74428575 is about 420.6425821349.

The spelling of 74428575 in words is "seventy-four million, four hundred twenty-eight thousand, five hundred seventy-five".