74887380 has 72 divisors (see below), whose sum is σ = 240530472. Its totient is φ = 18794496.

The previous prime is 74887369. The next prime is 74887391. The reversal of 74887380 is 8378847.

It is an interprime number because it is at equal distance from previous prime (74887369) and next prime (74887391).

It can be written as a sum of positive squares in 4 ways, for example, as 25522704 + 49364676 = 5052^2 + 7026^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9177 + ... + 15296.

It is an arithmetic number, because the mean of its divisors is an integer number (3340701).

Almost surely, 2^74887380 is an apocalyptic number.

It is an amenable number.

74887380 is an abundant number, since it is smaller than the sum of its proper divisors (165643092).

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

74887380 is a wasteful number, since it uses less digits than its factorization.

74887380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24505 (or 24500 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 74887380 is about 8653.7494763831. The cubic root of 74887380 is about 421.5051438268.

The spelling of 74887380 in words is "seventy-four million, eight hundred eighty-seven thousand, three hundred eighty".