74540880 has 60 divisors (see below), whose sum is σ = 250335540. Its totient is φ = 19877376.

The previous prime is 74540867. The next prime is 74540881. The reversal of 74540880 is 8804547.

It can be written as a sum of positive squares in 2 ways, for example, as 12194064 + 62346816 = 3492^2 + 7896^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74540881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51045 + ... + 52484.

It is an arithmetic number, because the mean of its divisors is an integer number (4172259).

Almost surely, 2^74540880 is an apocalyptic number.

It is an amenable number.

74540880 is an abundant number, since it is smaller than the sum of its proper divisors (175794660).

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

74540880 is a wasteful number, since it uses less digits than its factorization.

74540880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103548 (or 103539 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 74540880 is about 8633.7060408610. The cubic root of 74540880 is about 420.8540444882.

The spelling of 74540880 in words is "seventy-four million, five hundred forty thousand, eight hundred eighty".