7422144 has 112 divisors (see below), whose sum is σ = 21457920. Its totient is φ = 2257920.

The previous prime is 7422143. The next prime is 7422167. The reversal of 7422144 is 4412247.

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

It is not an unprimeable number, because it can be changed into a prime (7422143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172587 + ... + 172629.

Almost surely, 2^7422144 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 7422144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10728960).

7422144 is an abundant number, since it is smaller than the sum of its proper divisors (14035776).

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

7422144 is a wasteful number, since it uses less digits than its factorization.

7422144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 108 counting only the distinct ones).

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

The square root of 7422144 is about 2724.3612095315. The cubic root of 7422144 is about 195.0637004248.

The spelling of 7422144 in words is "seven million, four hundred twenty-two thousand, one hundred forty-four".