74552320 has 44 divisors (see below), whose sum is σ = 178850484. Its totient is φ = 29818880.

The previous prime is 74552287. The next prime is 74552321. The reversal of 74552320 is 2325547.

It can be written as a sum of positive squares in 2 ways, for example, as 48664576 + 25887744 = 6976^2 + 5088^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74552321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2161 + ... + 12400.

Almost surely, 2^74552320 is an apocalyptic number.

It is an amenable number.

74552320 is an abundant number, since it is smaller than the sum of its proper divisors (104298164).

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

74552320 is a wasteful number, since it uses less digits than its factorization.

74552320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14586 (or 14568 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 74552320 is about 8634.3685351043. The cubic root of 74552320 is about 420.8755732743.

Adding to 74552320 its reverse (2325547), we get a palindrome (76877867).

The spelling of 74552320 in words is "seventy-four million, five hundred fifty-two thousand, three hundred twenty".