22216798 has 16 divisors (see below), whose sum is σ = 34744464. Its totient is φ = 10644480.

The previous prime is 22216769. The next prime is 22216829. The reversal of 22216798 is 89761222.

It is a super-2 number, since 2×22216798² = 987172226745608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2718 + ... + 7198.

It is an arithmetic number, because the mean of its divisors is an integer number (2171529).

Almost surely, 2^22216798 is an apocalyptic number.

22216798 is a deficient number, since it is larger than the sum of its proper divisors (12527666).

22216798 is a wasteful number, since it uses less digits than its factorization.

22216798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4587.

The product of its digits is 24192, while the sum is 37.

The square root of 22216798 is about 4713.4698471508. The cubic root of 22216798 is about 281.1213450748.

It can be divided in two parts, 222 and 16798, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 22216798 in words is "twenty-two million, two hundred sixteen thousand, seven hundred ninety-eight".