7444220 has 24 divisors (see below), whose sum is σ = 17866464. Its totient is φ = 2552256.

The previous prime is 7444201. The next prime is 7444223. The reversal of 7444220 is 224447.

It is a super-2 number, since 2×7444220² = 110832822816800, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7444223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26447 + ... + 26726.

It is an arithmetic number, because the mean of its divisors is an integer number (744436).

Almost surely, 2^7444220 is an apocalyptic number.

7444220 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7444220 is an abundant number, since it is smaller than the sum of its proper divisors (10422244).

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

7444220 is a wasteful number, since it uses less digits than its factorization.

7444220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53189 (or 53187 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 7444220 is about 2728.4097932679. The cubic root of 7444220 is about 195.2569044323.

Adding to 7444220 its reverse (224447), we get a palindrome (7668667).

The spelling of 7444220 in words is "seven million, four hundred forty-four thousand, two hundred twenty".