20895445 has 8 divisors (see below), whose sum is σ = 25686360. Its totient is φ = 16308480.

The previous prime is 20895443. The next prime is 20895451. The reversal of 20895445 is 54459802.

It can be written as a sum of positive squares in 4 ways, for example, as 1473796 + 19421649 = 1214^2 + 4407^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20895445 - 2¹ = 20895443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20895443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50760 + ... + 51169.

It is an arithmetic number, because the mean of its divisors is an integer number (3210795).

Almost surely, 2^20895445 is an apocalyptic number.

It is an amenable number.

20895445 is a deficient number, since it is larger than the sum of its proper divisors (4790915).

20895445 is a wasteful number, since it uses less digits than its factorization.

20895445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101975.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 20895445 is about 4571.1535743180. The cubic root of 20895445 is about 275.4337837114.

The spelling of 20895445 in words is "twenty million, eight hundred ninety-five thousand, four hundred forty-five".