22188030 has 16 divisors (see below), whose sum is σ = 53251344. Its totient is φ = 5916800.

The previous prime is 22188007. The next prime is 22188053. The reversal of 22188030 is 3088122.

It is an interprime number because it is at equal distance from previous prime (22188007) and next prime (22188053).

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, 369771 + ... + 369830.

It is an arithmetic number, because the mean of its divisors is an integer number (3328209).

Almost surely, 2^22188030 is an apocalyptic number.

22188030 is an abundant number, since it is smaller than the sum of its proper divisors (31063314).

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

22188030 is a wasteful number, since it uses less digits than its factorization.

22188030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739611.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 22188030 is about 4710.4171789768. The cubic root of 22188030 is about 280.9999535636. Note that the first 4 decimals are identical.

It can be divided in two parts, 221880 and 30, that multiplied together give a square (6656400 = 2580²).

The spelling of 22188030 in words is "twenty-two million, one hundred eighty-eight thousand, thirty".