20895465 has 16 divisors (see below), whose sum is σ = 35399808. Its totient is φ = 10488576.

The previous prime is 20895461. The next prime is 20895467. The reversal of 20895465 is 56459802.

It is not a de Polignac number, because 20895465 - 2² = 20895461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20895461) 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, 40717 + ... + 41226.

It is an arithmetic number, because the mean of its divisors is an integer number (2212488).

Almost surely, 2^20895465 is an apocalyptic number.

It is an amenable number.

20895465 is a deficient number, since it is larger than the sum of its proper divisors (14504343).

20895465 is a wasteful number, since it uses less digits than its factorization.

20895465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81968.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 20895465 is about 4571.1557619491. The cubic root of 20895465 is about 275.4338715882.

The spelling of 20895465 in words is "twenty million, eight hundred ninety-five thousand, four hundred sixty-five".