74340720 has 160 divisors (see below), whose sum is σ = 259031040. Its totient is φ = 19595520.

The previous prime is 74340713. The next prime is 74340737. The reversal of 74340720 is 2704347.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 274185 + ... + 274455.

It is an arithmetic number, because the mean of its divisors is an integer number (1618944).

Almost surely, 2^74340720 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 74340720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129515520).

74340720 is an abundant number, since it is smaller than the sum of its proper divisors (184690320).

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

74340720 is a wasteful number, since it uses less digits than its factorization.

74340720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 74340720 is about 8622.1064711589. The cubic root of 74340720 is about 420.4770090590.

The spelling of 74340720 in words is "seventy-four million, three hundred forty thousand, seven hundred twenty".