20813358 has 16 divisors (see below), whose sum is σ = 43062480. Its totient is φ = 6698496.

The previous prime is 20813347. The next prime is 20813393. The reversal of 20813358 is 85331802.

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 7 ways as a sum of consecutive naturals, for example, 59635 + ... + 59982.

It is an arithmetic number, because the mean of its divisors is an integer number (2691405).

Almost surely, 2^20813358 is an apocalyptic number.

20813358 is an abundant number, since it is smaller than the sum of its proper divisors (22249122).

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

20813358 is a wasteful number, since it uses less digits than its factorization.

20813358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119651.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 20813358 is about 4562.1659329753. The cubic root of 20813358 is about 275.0726331560.

The spelling of 20813358 in words is "twenty million, eight hundred thirteen thousand, three hundred fifty-eight".