74389392 has 120 divisors (see below), whose sum is σ = 259596480. Its totient is φ = 19319040.

The previous prime is 74389373. The next prime is 74389459. The reversal of 74389392 is 29398347.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

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 23 ways as a sum of consecutive naturals, for example, 7734 + ... + 14442.

It is an arithmetic number, because the mean of its divisors is an integer number (2163304).

Almost surely, 2^74389392 is an apocalyptic number.

74389392 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74389392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129798240).

74389392 is an abundant number, since it is smaller than the sum of its proper divisors (185207088).

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

74389392 is a wasteful number, since it uses less digits than its factorization.

74389392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6741 (or 6732 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 74389392 is about 8624.9285214429. The cubic root of 74389392 is about 420.5687532707.

The spelling of 74389392 in words is "seventy-four million, three hundred eighty-nine thousand, three hundred ninety-two".