20958794 has 4 divisors (see below), whose sum is σ = 31438194. Its totient is φ = 10479396.

The previous prime is 20958781. The next prime is 20958803. The reversal of 20958794 is 49785902.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17850625 + 3108169 = 4225^2 + 1763^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5239697 + ... + 5239700.

Almost surely, 2^20958794 is an apocalyptic number.

20958794 is a deficient number, since it is larger than the sum of its proper divisors (10479400).

20958794 is a wasteful number, since it uses less digits than its factorization.

20958794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10479399.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 20958794 is about 4578.0775441226. The cubic root of 20958794 is about 275.7118483247.

The spelling of 20958794 in words is "twenty million, nine hundred fifty-eight thousand, seven hundred ninety-four".