20288902 has 8 divisors (see below), whose sum is σ = 30486456. Its totient is φ = 10126752.

The previous prime is 20288899. The next prime is 20288909. The reversal of 20288902 is 20988202.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20288909) 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, 7368 + ... + 9739.

It is an arithmetic number, because the mean of its divisors is an integer number (3810807).

Almost surely, 2^20288902 is an apocalyptic number.

20288902 is a deficient number, since it is larger than the sum of its proper divisors (10197554).

20288902 is a wasteful number, since it uses less digits than its factorization.

20288902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17702.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 20288902 is about 4504.3203704888. The cubic root of 20288902 is about 272.7425195584.

The spelling of 20288902 in words is "twenty million, two hundred eighty-eight thousand, nine hundred two".