74304120 has 128 divisors (see below), whose sum is σ = 245306880. Its totient is φ = 17856000.

The previous prime is 74304091. The next prime is 74304121. The reversal of 74304120 is 2140347.

It is a super-2 number, since 2×74304120² = 11042204497948800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74304121) 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, 238765 + ... + 239075.

It is an arithmetic number, because the mean of its divisors is an integer number (1916460).

Almost surely, 2^74304120 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 74304120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122653440).

74304120 is an abundant number, since it is smaller than the sum of its proper divisors (171002760).

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

74304120 is a wasteful number, since it uses less digits than its factorization.

74304120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 74304120 is about 8619.9837586854. The cubic root of 74304120 is about 420.4079935640.

Adding to 74304120 its reverse (2140347), we get a palindrome (76444467).

The spelling of 74304120 in words is "seventy-four million, three hundred four thousand, one hundred twenty".