74399346 has 72 divisors (see below), whose sum is σ = 190466640. Its totient is φ = 20923056.

The previous prime is 74399329. The next prime is 74399371. The reversal of 74399346 is 64399347.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 58465 + ... + 59723.

It is an arithmetic number, because the mean of its divisors is an integer number (2645370).

Almost surely, 2^74399346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74399346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95233320).

74399346 is an abundant number, since it is smaller than the sum of its proper divisors (116067294).

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

74399346 is a wasteful number, since it uses less digits than its factorization.

74399346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348 (or 1338 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 74399346 is about 8625.5055504011. The cubic root of 74399346 is about 420.5875111184.

Subtracting from 74399346 its reverse (64399347), we obtain a palindrome (9999999).

The spelling of 74399346 in words is "seventy-four million, three hundred ninety-nine thousand, three hundred forty-six".