74004720 has 160 divisors (see below), whose sum is σ = 240413184. Its totient is φ = 18816000.

The previous prime is 74004683. The next prime is 74004727. The reversal of 74004720 is 2740047.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74004727) 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, 732670 + ... + 732770.

Almost surely, 2^74004720 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 74004720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120206592).

74004720 is an abundant number, since it is smaller than the sum of its proper divisors (166408464).

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

74004720 is a wasteful number, since it uses less digits than its factorization.

74004720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 74004720 is about 8602.5996070955. The cubic root of 74004720 is about 419.8425713839.

Adding to 74004720 its reverse (2740047), we get a palindrome (76744767).

The spelling of 74004720 in words is "seventy-four million, four thousand, seven hundred twenty".