74443140 has 72 divisors (see below), whose sum is σ = 237706560. Its totient is φ = 18805824.

The previous prime is 74443139. The next prime is 74443141. The reversal of 74443140 is 4134447.

It is an interprime number because it is at equal distance from previous prime (74443139) and next prime (74443141).

It is not an unprimeable number, because it can be changed into a prime (74443141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7464 + ... + 14303.

It is an arithmetic number, because the mean of its divisors is an integer number (3301480).

Almost surely, 2^74443140 is an apocalyptic number.

It is an amenable number.

74443140 is an abundant number, since it is smaller than the sum of its proper divisors (163263420).

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

74443140 is a wasteful number, since it uses less digits than its factorization.

74443140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21801 (or 21796 counting only the distinct ones).

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

The square root of 74443140 is about 8628.0438107372. The cubic root of 74443140 is about 420.6700189969.

Adding to 74443140 its reverse (4134447), we get a palindrome (78577587).

The spelling of 74443140 in words is "seventy-four million, four hundred forty-three thousand, one hundred forty".