20958795 has 48 divisors (see below), whose sum is σ = 42692832. Its totient is φ = 9377280.

The previous prime is 20958781. The next prime is 20958803. The reversal of 20958795 is 59785902.

It is a happy number.

It is not a de Polignac number, because 20958795 - 2⁹ = 20958283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20958795.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4807 + ... + 8063.

It is an arithmetic number, because the mean of its divisors is an integer number (889434).

Almost surely, 2^20958795 is an apocalyptic number.

20958795 is an abundant number, since it is smaller than the sum of its proper divisors (21734037).

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

20958795 is a wasteful number, since it uses less digits than its factorization.

20958795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3292 (or 3289 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 20958795 is about 4578.0776533388. The cubic root of 20958795 is about 275.7118527096.

The spelling of 20958795 in words is "twenty million, nine hundred fifty-eight thousand, seven hundred ninety-five".