74552140 has 96 divisors (see below), whose sum is σ = 181367424. Its totient is φ = 25497600.

The previous prime is 74552129. The next prime is 74552147. The reversal of 74552140 is 4125547.

It is a junction number, because it is equal to n+sod(n) for n = 74552099 and 74552108.

It is not an unprimeable number, because it can be changed into a prime (74552147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 446337 + ... + 446503.

It is an arithmetic number, because the mean of its divisors is an integer number (1889244).

Almost surely, 2^74552140 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 74552140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90683712).

74552140 is an abundant number, since it is smaller than the sum of its proper divisors (106815284).

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

74552140 is a wasteful number, since it uses less digits than its factorization.

74552140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 74552140 is about 8634.3581116375. The cubic root of 74552140 is about 420.8752345517.

Adding to 74552140 its reverse (4125547), we get a palindrome (78677687).

The spelling of 74552140 in words is "seventy-four million, five hundred fifty-two thousand, one hundred forty".