74118720 has 112 divisors (see below), whose sum is σ = 253471680. Its totient is φ = 18241536.

The previous prime is 74118679. The next prime is 74118727. The reversal of 74118720 is 2781147.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (74118727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9511 + ... + 15449.

It is an arithmetic number, because the mean of its divisors is an integer number (2263140).

Almost surely, 2^74118720 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 74118720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126735840).

74118720 is an abundant number, since it is smaller than the sum of its proper divisors (179352960).

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

74118720 is a wasteful number, since it uses less digits than its factorization.

74118720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5972 (or 5962 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 74118720 is about 8609.2229614524. Note that the first 3 decimals coincide. The cubic root of 74118720 is about 420.0580418652.

Adding to 74118720 its reverse (2781147), we get a palindrome (76899867).

The spelling of 74118720 in words is "seventy-four million, one hundred eighteen thousand, seven hundred twenty".