74045540 has 24 divisors (see below), whose sum is σ = 164643192. Its totient is φ = 27875840.

The previous prime is 74045513. The next prime is 74045593. The reversal of 74045540 is 4554047.

It can be written as a sum of positive squares in 4 ways, for example, as 38738176 + 35307364 = 6224^2 + 5942^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108551 + ... + 109230.

It is an arithmetic number, because the mean of its divisors is an integer number (6860133).

Almost surely, 2^74045540 is an apocalyptic number.

It is an amenable number.

74045540 is an abundant number, since it is smaller than the sum of its proper divisors (90597652).

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

74045540 is a wasteful number, since it uses less digits than its factorization.

74045540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217807 (or 217805 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 74045540 is about 8604.9718186639. The cubic root of 74045540 is about 419.9197503517.

Adding to 74045540 its reverse (4554047), we get a palindrome (78599587).

The spelling of 74045540 in words is "seventy-four million, forty-five thousand, five hundred forty".