74221115 has 16 divisors (see below), whose sum is σ = 94521600. Its totient is φ = 55827552.

The previous prime is 74221109. The next prime is 74221127. The reversal of 74221115 is 51112247.

It is a cyclic number.

It is not a de Polignac number, because 74221115 - 2⁶ = 74221051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

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, 1316 + ... + 12254.

It is an arithmetic number, because the mean of its divisors is an integer number (5907600).

Almost surely, 2^74221115 is an apocalyptic number.

74221115 is a deficient number, since it is larger than the sum of its proper divisors (20300485).

74221115 is a wasteful number, since it uses less digits than its factorization.

74221115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11026.

The product of its digits is 560, while the sum is 23.

The square root of 74221115 is about 8615.1677290695. The cubic root of 74221115 is about 420.2513895621.

The spelling of 74221115 in words is "seventy-four million, two hundred twenty-one thousand, one hundred fifteen".