20898250 has 32 divisors (see below), whose sum is σ = 39424320. Its totient is φ = 8294800.

The previous prime is 20898223. The next prime is 20898257. The reversal of 20898250 is 5289802.

It is not an unprimeable number, because it can be changed into a prime (20898257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44517 + ... + 44983.

It is an arithmetic number, because the mean of its divisors is an integer number (1232010).

Almost surely, 2^20898250 is an apocalyptic number.

20898250 is a deficient number, since it is larger than the sum of its proper divisors (18526070).

20898250 is a wasteful number, since it uses less digits than its factorization.

20898250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 20898250 is about 4571.4603793536. The cubic root of 20898250 is about 275.4461078837.

The spelling of 20898250 in words is "twenty million, eight hundred ninety-eight thousand, two hundred fifty".