74574940 has 48 divisors (see below), whose sum is σ = 173676384. Its totient is φ = 26668800.

The previous prime is 74574923. The next prime is 74574949. The reversal of 74574940 is 4947547.

It is a super-2 number, since 2×74574940² = 11122843352007200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 74574893 and 74574902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74574949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10642 + ... + 16198.

It is an arithmetic number, because the mean of its divisors is an integer number (3618258).

Almost surely, 2^74574940 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 74574940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86838192).

74574940 is an abundant number, since it is smaller than the sum of its proper divisors (99101444).

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

74574940 is a wasteful number, since it uses less digits than its factorization.

74574940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5638 (or 5636 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 74574940 is about 8635.6783173066. The cubic root of 74574940 is about 420.9181350743.

The spelling of 74574940 in words is "seventy-four million, five hundred seventy-four thousand, nine hundred forty".