21969162 has 24 divisors (see below), whose sum is σ = 47689824. Its totient is φ = 7309224.

The previous prime is 21969127. The next prime is 21969169. The reversal of 21969162 is 26196912.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (21969169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14073 + ... + 15555.

It is an arithmetic number, because the mean of its divisors is an integer number (1987076).

Almost surely, 2^21969162 is an apocalyptic number.

21969162 is an abundant number, since it is smaller than the sum of its proper divisors (25720662).

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

21969162 is a wasteful number, since it uses less digits than its factorization.

21969162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314 (or 2311 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 21969162 is about 4687.1272651807. The cubic root of 21969162 is about 280.0729486800.

The spelling of 21969162 in words is "twenty-one million, nine hundred sixty-nine thousand, one hundred sixty-two".