20958798 has 32 divisors (see below), whose sum is σ = 49204224. Its totient is φ = 5825952.

The previous prime is 20958781. The next prime is 20958803. The reversal of 20958798 is 89785902.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5190 + ... + 8297.

It is an arithmetic number, because the mean of its divisors is an integer number (1537632).

Almost surely, 2^20958798 is an apocalyptic number.

20958798 is an abundant number, since it is smaller than the sum of its proper divisors (28245426).

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

20958798 is a wasteful number, since it uses less digits than its factorization.

20958798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13536.

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 20958798 is about 4578.0779809872. The cubic root of 20958798 is about 275.7118658646.

The spelling of 20958798 in words is "twenty million, nine hundred fifty-eight thousand, seven hundred ninety-eight".