20827485 has 48 divisors (see below), whose sum is σ = 42397056. Its totient is φ = 9258624.

The previous prime is 20827453. The next prime is 20827487. The reversal of 20827485 is 58472802.

It is a happy number.

It is not a de Polignac number, because 20827485 - 2⁵ = 20827453 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20827487) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10762 + ... + 12548.

It is an arithmetic number, because the mean of its divisors is an integer number (883272).

Almost surely, 2^20827485 is an apocalyptic number.

It is an amenable number.

20827485 is an abundant number, since it is smaller than the sum of its proper divisors (21569571).

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

20827485 is a wasteful number, since it uses less digits than its factorization.

20827485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842 (or 1839 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 20827485 is about 4563.7139480910. The cubic root of 20827485 is about 275.1348539700.

It can be divided in two parts, 20827 and 485, that added together give a palindrome (21312).

The spelling of 20827485 in words is "twenty million, eight hundred twenty-seven thousand, four hundred eighty-five".