74145432 has 32 divisors (see below), whose sum is σ = 196268400. Its totient is φ = 23261184.

The previous prime is 74145427. The next prime is 74145433. The reversal of 74145432 is 23454147.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 74145432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74145433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90457 + ... + 91272.

Almost surely, 2^74145432 is an apocalyptic number.

It is an amenable number.

74145432 is an abundant number, since it is smaller than the sum of its proper divisors (122122968).

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

74145432 is a wasteful number, since it uses less digits than its factorization.

74145432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181755 (or 181751 counting only the distinct ones).

The product of its digits is 13440, while the sum is 30.

The square root of 74145432 is about 8610.7741812220. The cubic root of 74145432 is about 420.1084980465.

Adding to 74145432 its reverse (23454147), we get a palindrome (97599579).

The spelling of 74145432 in words is "seventy-four million, one hundred forty-five thousand, four hundred thirty-two".