74535540 has 72 divisors (see below), whose sum is σ = 214203360. Its totient is φ = 19365120.

The previous prime is 74535533. The next prime is 74535547. The reversal of 74535540 is 4553547.

It is an interprime number because it is at equal distance from previous prime (74535533) and next prime (74535547).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74535547) 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, 100491 + ... + 101229.

Almost surely, 2^74535540 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 74535540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107101680).

74535540 is an abundant number, since it is smaller than the sum of its proper divisors (139667820).

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

74535540 is a wasteful number, since it uses less digits than its factorization.

74535540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 33.

The square root of 74535540 is about 8633.3967822636. The cubic root of 74535540 is about 420.8439944581.

The spelling of 74535540 in words is "seventy-four million, five hundred thirty-five thousand, five hundred forty".