20898192 has 120 divisors (see below), whose sum is σ = 64950208. Its totient is φ = 5667840.

The previous prime is 20898169. The next prime is 20898193. The reversal of 20898192 is 29189802.

It is a self number, because there is not a number n which added to its sum of digits gives 20898192.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20898193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 509692 + ... + 509732.

Almost surely, 2^20898192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20898192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32475104).

20898192 is an abundant number, since it is smaller than the sum of its proper divisors (44052016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20898192 is a wasteful number, since it uses less digits than its factorization.

20898192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 20898192 is about 4571.4540356434. The cubic root of 20898192 is about 275.4458530635.

The spelling of 20898192 in words is "twenty million, eight hundred ninety-eight thousand, one hundred ninety-two".