20288653 has 8 divisors (see below), whose sum is σ = 25295040. Its totient is φ = 15809280.

The previous prime is 20288651. The next prime is 20288657. The reversal of 20288653 is 35688202.

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

It is a cyclic number.

It is not a de Polignac number, because 20288653 - 2¹ = 20288651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20288651) 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, 131668 + ... + 131821.

It is an arithmetic number, because the mean of its divisors is an integer number (3161880).

Almost surely, 2^20288653 is an apocalyptic number.

It is an amenable number.

20288653 is a deficient number, since it is larger than the sum of its proper divisors (5006387).

20288653 is a wasteful number, since it uses less digits than its factorization.

20288653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263507.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 20288653 is about 4504.2927302741. The cubic root of 20288653 is about 272.7414037897.

The spelling of 20288653 in words is "twenty million, two hundred eighty-eight thousand, six hundred fifty-three".