20998350 has 36 divisors (see below), whose sum is σ = 56416776. Its totient is φ = 5599440.

The previous prime is 20998303. The next prime is 20998387. The reversal of 20998350 is 5389902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22882 + ... + 23781.

Almost surely, 2^20998350 is an apocalyptic number.

20998350 is an abundant number, since it is smaller than the sum of its proper divisors (35418426).

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

20998350 is a wasteful number, since it uses less digits than its factorization.

20998350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46681 (or 46673 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 20998350 is about 4582.3956616600. The cubic root of 20998350 is about 275.8851916951.

The spelling of 20998350 in words is "twenty million, nine hundred ninety-eight thousand, three hundred fifty".