74003220 has 72 divisors (see below), whose sum is σ = 232805664. Its totient is φ = 19732896.

The previous prime is 74003207. The next prime is 74003221. The reversal of 74003220 is 2230047.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 74003193 and 74003202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74003221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2754 + ... + 12473.

It is an arithmetic number, because the mean of its divisors is an integer number (3233412).

Almost surely, 2^74003220 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 74003220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116402832).

74003220 is an abundant number, since it is smaller than the sum of its proper divisors (158802444).

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

74003220 is a wasteful number, since it uses less digits than its factorization.

74003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15251 (or 15237 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 74003220 is about 8602.5124237051. The cubic root of 74003220 is about 419.8397347715.

Adding to 74003220 its reverse (2230047), we get a palindrome (76233267).

The spelling of 74003220 in words is "seventy-four million, three thousand, two hundred twenty".