21126896 has 20 divisors (see below), whose sum is σ = 46781232. Its totient is φ = 9054336.

The previous prime is 21126893. The next prime is 21126899. The reversal of 21126896 is 69862112.

It is an interprime number because it is at equal distance from previous prime (21126893) and next prime (21126899).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21126893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94205 + ... + 94428.

Almost surely, 2^21126896 is an apocalyptic number.

It is an amenable number.

21126896 is an abundant number, since it is smaller than the sum of its proper divisors (25654336).

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

21126896 is a wasteful number, since it uses less digits than its factorization.

21126896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188648 (or 188642 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 21126896 is about 4596.4003306936. The cubic root of 21126896 is about 276.4470106985.

It can be divided in two parts, 21126 and 896, that added together give a palindrome (22022).

The spelling of 21126896 in words is "twenty-one million, one hundred twenty-six thousand, eight hundred ninety-six".