20869275 has 48 divisors (see below), whose sum is σ = 39870464. Its totient is φ = 9434880.

The previous prime is 20869273. The next prime is 20869279. The reversal of 20869275 is 57296802.

It is a happy number.

It is not a de Polignac number, because 20869275 - 2¹ = 20869273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20869273) 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, 66519 + ... + 66831.

Almost surely, 2^20869275 is an apocalyptic number.

20869275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20869275 is a deficient number, since it is larger than the sum of its proper divisors (19001189).

20869275 is a wasteful number, since it uses less digits than its factorization.

20869275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 20869275 is about 4568.2901615375. The cubic root of 20869275 is about 275.3187488570.

The spelling of 20869275 in words is "twenty million, eight hundred sixty-nine thousand, two hundred seventy-five".