21126096 has 50 divisors (see below), whose sum is σ = 61148802. Its totient is φ = 7041600.

The previous prime is 21126089. The next prime is 21126103. The reversal of 21126096 is 69062112.

It is an interprime number because it is at equal distance from previous prime (21126089) and next prime (21126103).

It can be written as a sum of positive squares in only one way, i.e., 20250000 + 876096 = 4500^2 + 936^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6855 + ... + 9446.

Almost surely, 2^21126096 is an apocalyptic number.

It is an amenable number.

21126096 is an abundant number, since it is smaller than the sum of its proper divisors (40022706).

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

21126096 is a wasteful number, since it uses less digits than its factorization.

21126096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16321 (or 16306 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 21126096 is about 4596.3133052480. The cubic root of 21126096 is about 276.4435213012.

The spelling of 21126096 in words is "twenty-one million, one hundred twenty-six thousand, ninety-six".