74428415 has 16 divisors (see below), whose sum is σ = 94957920. Its totient is φ = 55843200.

The previous prime is 74428411. The next prime is 74428429. The reversal of 74428415 is 51482447.

It is not a de Polignac number, because 74428415 - 2² = 74428411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74428411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5717 + ... + 13473.

It is an arithmetic number, because the mean of its divisors is an integer number (5934870).

Almost surely, 2^74428415 is an apocalyptic number.

74428415 is a deficient number, since it is larger than the sum of its proper divisors (20529505).

74428415 is a wasteful number, since it uses less digits than its factorization.

74428415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7882.

The product of its digits is 35840, while the sum is 35.

The square root of 74428415 is about 8627.1904464895. The cubic root of 74428415 is about 420.6422807146.

The spelling of 74428415 in words is "seventy-four million, four hundred twenty-eight thousand, four hundred fifteen".