20998296 has 48 divisors (see below), whose sum is σ = 62042760. Its totient is φ = 6362880.

The previous prime is 20998267. The next prime is 20998297. The reversal of 20998296 is 69289902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20998297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12465 + ... + 14048.

Almost surely, 2^20998296 is an apocalyptic number.

It is an amenable number.

20998296 is an abundant number, since it is smaller than the sum of its proper divisors (41044464).

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

20998296 is a wasteful number, since it uses less digits than its factorization.

20998296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26536 (or 26529 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 20998296 is about 4582.3897695417. The cubic root of 20998296 is about 275.8849552033.

The spelling of 20998296 in words is "twenty million, nine hundred ninety-eight thousand, two hundred ninety-six".