20189088 has 60 divisors (see below), whose sum is σ = 59383170. Its totient is φ = 6728832.

The previous prime is 20189069. The next prime is 20189107. The reversal of 20189088 is 88098102.

It is an interprime number because it is at equal distance from previous prime (20189069) and next prime (20189107).

It can be written as a sum of positive squares in only one way, i.e., 16548624 + 3640464 = 4068^2 + 1908^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1303 + ... + 6486.

Almost surely, 2^20189088 is an apocalyptic number.

It is an amenable number.

20189088 is an abundant number, since it is smaller than the sum of its proper divisors (39194082).

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

20189088 is an equidigital number, since it uses as much as digits as its factorization.

20189088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7811 (or 7794 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 20189088 is about 4493.2269027949. The cubic root of 20189088 is about 272.2945195051.

The spelling of 20189088 in words is "twenty million, one hundred eighty-nine thousand, eighty-eight".