7149222 has 20 divisors (see below), whose sum is σ = 16019916. Its totient is φ = 2383020.

The previous prime is 7149221. The next prime is 7149227. The reversal of 7149222 is 2229417.

It is a super-2 number, since 2×7149222² = 102222750410568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7149221) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21904 + ... + 22227.

Almost surely, 2^7149222 is an apocalyptic number.

7149222 is an abundant number, since it is smaller than the sum of its proper divisors (8870694).

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

7149222 is a wasteful number, since it uses less digits than its factorization.

7149222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44145 (or 44136 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 7149222 is about 2673.8029097149. The cubic root of 7149222 is about 192.6428646551.

The spelling of 7149222 in words is "seven million, one hundred forty-nine thousand, two hundred twenty-two".