74130920 has 64 divisors (see below), whose sum is σ = 173629440. Its totient is φ = 28454400.

The previous prime is 74130919. The next prime is 74130929. The reversal of 74130920 is 2903147.

It is a self number, because there is not a number n which added to its sum of digits gives 74130920.

It is not an unprimeable number, because it can be changed into a prime (74130929) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 236684 + ... + 236996.

It is an arithmetic number, because the mean of its divisors is an integer number (2712960).

Almost surely, 2^74130920 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 74130920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86814720).

74130920 is an abundant number, since it is smaller than the sum of its proper divisors (99498520).

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

74130920 is a wasteful number, since it uses less digits than its factorization.

74130920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 74130920 is about 8609.9314747563. The cubic root of 74130920 is about 420.0810878962.

The spelling of 74130920 in words is "seventy-four million, one hundred thirty thousand, nine hundred twenty".