21093926 has 16 divisors (see below), whose sum is σ = 37044000. Its totient is φ = 8819520.

The previous prime is 21093913. The next prime is 21093997. The reversal of 21093926 is 62939012.

21093926 = 274² + 275² + ... + 437².

It is a junction number, because it is equal to n+sod(n) for n = 21093892 and 21093901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17801 + ... + 18948.

It is an arithmetic number, because the mean of its divisors is an integer number (2315250).

Almost surely, 2^21093926 is an apocalyptic number.

21093926 is a deficient number, since it is larger than the sum of its proper divisors (15950074).

21093926 is a wasteful number, since it uses less digits than its factorization.

21093926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36799.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 21093926 is about 4592.8124281316. The cubic root of 21093926 is about 276.3031308576.

The spelling of 21093926 in words is "twenty-one million, ninety-three thousand, nine hundred twenty-six".