20895315 has 24 divisors (see below), whose sum is σ = 38892240. Its totient is φ = 9551808.

The previous prime is 20895289. The next prime is 20895317. The reversal of 20895315 is 51359802.

It is not a de Polignac number, because 20895315 - 2⁷ = 20895187 is a prime.

It is a super-2 number, since 2×20895315² = 873228377898450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20895317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13480 + ... + 14949.

It is an arithmetic number, because the mean of its divisors is an integer number (1620510).

Almost surely, 2^20895315 is an apocalyptic number.

20895315 is a deficient number, since it is larger than the sum of its proper divisors (17996925).

20895315 is a wasteful number, since it uses less digits than its factorization.

20895315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28451 (or 28444 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 20895315 is about 4571.1393546905. The cubic root of 20895315 is about 275.4332125109.

The spelling of 20895315 in words is "twenty million, eight hundred ninety-five thousand, three hundred fifteen".