20572089 has 8 divisors (see below), whose sum is σ = 27611712. Its totient is φ = 13623600.

The previous prime is 20572081. The next prime is 20572093. The reversal of 20572089 is 98027502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20572089 - 2³ = 20572081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20572081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22254 + ... + 23159.

It is an arithmetic number, because the mean of its divisors is an integer number (3451464).

Almost surely, 2^20572089 is an apocalyptic number.

It is an amenable number.

20572089 is a deficient number, since it is larger than the sum of its proper divisors (7039623).

20572089 is a wasteful number, since it uses less digits than its factorization.

20572089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45567.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 20572089 is about 4535.6464809330. The cubic root of 20572089 is about 274.0056164157.

The spelling of 20572089 in words is "twenty million, five hundred seventy-two thousand, eighty-nine".