7222888 has 48 divisors (see below), whose sum is σ = 14881860. Its totient is φ = 3283200.

The previous prime is 7222849. The next prime is 7222903. The reversal of 7222888 is 8882227.

It can be written as a sum of positive squares in 2 ways, for example, as 5026564 + 2196324 = 2242^2 + 1482^2 .

It is a super-2 number, since 2×7222888² = 104340222121088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118378 + ... + 118438.

Almost surely, 2^7222888 is an apocalyptic number.

It is an amenable number.

7222888 is an abundant number, since it is smaller than the sum of its proper divisors (7658972).

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

7222888 is a wasteful number, since it uses less digits than its factorization.

7222888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 123 counting only the distinct ones).

The product of its digits is 28672, while the sum is 37.

The square root of 7222888 is about 2687.5431159332. The cubic root of 7222888 is about 193.3022727218.

It can be divided in two parts, 722 and 2888, that multiplied together give a 4-th power (2085136 = 38⁴).

The spelling of 7222888 in words is "seven million, two hundred twenty-two thousand, eight hundred eighty-eight".