74491515 has 48 divisors (see below), whose sum is σ = 154064160. Its totient is φ = 34050240.

The previous prime is 74491511. The next prime is 74491541. The reversal of 74491515 is 51519447.

It is not a de Polignac number, because 74491515 - 2² = 74491511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74491515.

It is not an unprimeable number, because it can be changed into a prime (74491511) 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, 985 + ... + 12245.

It is an arithmetic number, because the mean of its divisors is an integer number (3209670).

Almost surely, 2^74491515 is an apocalyptic number.

74491515 is an abundant number, since it is smaller than the sum of its proper divisors (79572645).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74491515 is a wasteful number, since it uses less digits than its factorization.

74491515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11289 (or 11276 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 74491515 is about 8630.8467139673. The cubic root of 74491515 is about 420.7611198729.

The spelling of 74491515 in words is "seventy-four million, four hundred ninety-one thousand, five hundred fifteen".