21126162 has 16 divisors (see below), whose sum is σ = 42641280. Its totient is φ = 6977232.

The previous prime is 21126109. The next prime is 21126169. The reversal of 21126162 is 26162112.

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 (21126169) 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, 15498 + ... + 16805.

It is an arithmetic number, because the mean of its divisors is an integer number (2665080).

Almost surely, 2^21126162 is an apocalyptic number.

21126162 is an abundant number, since it is smaller than the sum of its proper divisors (21515118).

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

21126162 is a wasteful number, since it uses less digits than its factorization.

21126162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32417.

The product of its digits is 288, while the sum is 21.

The square root of 21126162 is about 4596.3204849096. The cubic root of 21126162 is about 276.4438091798.

Adding to 21126162 its reverse (26162112), we get a palindrome (47288274).

The spelling of 21126162 in words is "twenty-one million, one hundred twenty-six thousand, one hundred sixty-two".