74444430 has 64 divisors (see below), whose sum is σ = 183617280. Its totient is φ = 19309824.

The previous prime is 74444417. The next prime is 74444431. The reversal of 74444430 is 3444447.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a plaindrome in base 13.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74444431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242337 + ... + 242643.

It is an arithmetic number, because the mean of its divisors is an integer number (2869020).

Almost surely, 2^74444430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74444430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91808640).

74444430 is an abundant number, since it is smaller than the sum of its proper divisors (109172850).

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

74444430 is a wasteful number, since it uses less digits than its factorization.

74444430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513.

The product of its (nonzero) digits is 21504, while the sum is 30.

The square root of 74444430 is about 8628.1185666401. The cubic root of 74444430 is about 420.6724488657.

Adding to 74444430 its reverse (3444447), we get a palindrome (77888877).

The spelling of 74444430 in words is "seventy-four million, four hundred forty-four thousand, four hundred thirty".