74221422 has 64 divisors (see below), whose sum is σ = 173746944. Its totient is φ = 20887040.

The previous prime is 74221421. The next prime is 74221457. The reversal of 74221422 is 22412247.

It is a junction number, because it is equal to n+sod(n) for n = 74221392 and 74221401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74221421) 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, 92728 + ... + 93524.

It is an arithmetic number, because the mean of its divisors is an integer number (2714796).

Almost surely, 2^74221422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74221422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86873472).

74221422 is an abundant number, since it is smaller than the sum of its proper divisors (99525522).

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

74221422 is a wasteful number, since it uses less digits than its factorization.

74221422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913.

The product of its digits is 1792, while the sum is 24.

The square root of 74221422 is about 8615.1855464639. The cubic root of 74221422 is about 420.2519689884.

Adding to 74221422 its reverse (22412247), we get a palindrome (96633669).

The spelling of 74221422 in words is "seventy-four million, two hundred twenty-one thousand, four hundred twenty-two".