74434140 has 120 divisors (see below), whose sum is σ = 254791152. Its totient is φ = 18040320.

The previous prime is 74434123. The next prime is 74434169. The reversal of 74434140 is 4143447.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15732 + ... + 19908.

Almost surely, 2^74434140 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 74434140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127395576).

74434140 is an abundant number, since it is smaller than the sum of its proper divisors (180357012).

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

74434140 is a wasteful number, since it uses less digits than its factorization.

74434140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4209 (or 4198 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 74434140 is about 8627.5222399018. The cubic root of 74434140 is about 420.6530656427.

Adding to 74434140 its reverse (4143447), we get a palindrome (78577587).

The spelling of 74434140 in words is "seventy-four million, four hundred thirty-four thousand, one hundred forty".