20276189 has 4 divisors (see below), whose sum is σ = 21468924. Its totient is φ = 19083456.

The previous prime is 20276183. The next prime is 20276203. The reversal of 20276189 is 98167202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9765625 + 10510564 = 3125^2 + 3242^2 .

It is a cyclic number.

It is not a de Polignac number, because 20276189 - 2²⁰ = 19227613 is a prime.

It is a super-2 number, since 2×20276189² = 822247680727442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20276183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596342 + ... + 596375.

It is an arithmetic number, because the mean of its divisors is an integer number (5367231).

Almost surely, 2^20276189 is an apocalyptic number.

It is an amenable number.

20276189 is a deficient number, since it is larger than the sum of its proper divisors (1192735).

20276189 is a wasteful number, since it uses less digits than its factorization.

20276189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192734.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 20276189 is about 4502.9089486686. The cubic root of 20276189 is about 272.6855409514.

The spelling of 20276189 in words is "twenty million, two hundred seventy-six thousand, one hundred eighty-nine".