20120969 has 6 divisors (see below), whose sum is σ = 22116570. Its totient is φ = 18291680.

The previous prime is 20120959. The next prime is 20120993. The reversal of 20120969 is 96902102.

It can be written as a sum of positive squares in only one way, i.e., 17749369 + 2371600 = 4213^2 + 1540^2 .

It is not a de Polignac number, because 20120969 - 2⁸ = 20120713 is a prime.

It is a super-2 number, since 2×20120969² = 809706786997922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83024 + ... + 83265.

It is an arithmetic number, because the mean of its divisors is an integer number (3686095).

Almost surely, 2^20120969 is an apocalyptic number.

It is an amenable number.

20120969 is a deficient number, since it is larger than the sum of its proper divisors (1995601).

20120969 is a wasteful number, since it uses less digits than its factorization.

20120969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166311 (or 166300 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 20120969 is about 4485.6403110370. The cubic root of 20120969 is about 271.9879292870.

The spelling of 20120969 in words is "twenty million, one hundred twenty thousand, nine hundred sixty-nine".