21796093 has 12 divisors (see below), whose sum is σ = 24358684. Its totient is φ = 19483200.

The previous prime is 21796067. The next prime is 21796129. The reversal of 21796093 is 39069712.

It can be written as a sum of positive squares in 2 ways, for example, as 8054244 + 13741849 = 2838^2 + 3707^2 .

It is a de Polignac number, because none of the positive numbers 2^k-21796093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21796013) 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, 5905 + ... + 8857.

Almost surely, 2^21796093 is an apocalyptic number.

21796093 is the 2953-rd heptagonal number.

It is an amenable number.

21796093 is a deficient number, since it is larger than the sum of its proper divisors (2562591).

21796093 is a wasteful number, since it uses less digits than its factorization.

21796093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036 (or 3025 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 21796093 is about 4668.6285994926. The cubic root of 21796093 is about 279.3355546075.

The spelling of 21796093 in words is "twenty-one million, seven hundred ninety-six thousand, ninety-three".