74434320 has 120 divisors (see below), whose sum is σ = 253870656. Its totient is φ = 19540224.

The previous prime is 74434309. The next prime is 74434351. The reversal of 74434320 is 2343447.

It is a tau number, because it is divible by the number of its divisors (120).

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, 47469 + ... + 49011.

Almost surely, 2^74434320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74434320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126935328).

74434320 is an abundant number, since it is smaller than the sum of its proper divisors (179436336).

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

74434320 is a wasteful number, since it uses less digits than its factorization.

74434320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629 (or 1620 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 74434320 is about 8627.5326716275. The cubic root of 74434320 is about 420.6534047232.

Adding to 74434320 its product of nonzero digits (8064), we get a square (74442384 = 8628²).

Adding to 74434320 its reverse (2343447), we get a palindrome (76777767).

The spelling of 74434320 in words is "seventy-four million, four hundred thirty-four thousand, three hundred twenty".