20912295 has 16 divisors (see below), whose sum is σ = 35428320. Its totient is φ = 10497024.

The previous prime is 20912291. The next prime is 20912303. The reversal of 20912295 is 59221902.

It is not a de Polignac number, because 20912295 - 2² = 20912291 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20912291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40750 + ... + 41259.

It is an arithmetic number, because the mean of its divisors is an integer number (2214270).

Almost surely, 2^20912295 is an apocalyptic number.

20912295 is a deficient number, since it is larger than the sum of its proper divisors (14516025).

20912295 is a wasteful number, since it uses less digits than its factorization.

20912295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82034.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 20912295 is about 4572.9962825264. The cubic root of 20912295 is about 275.5078000389.

The spelling of 20912295 in words is "twenty million, nine hundred twelve thousand, two hundred ninety-five".