21092383 has 12 divisors (see below), whose sum is σ = 23031648. Its totient is φ = 19306560.

The previous prime is 21092371. The next prime is 21092399. The reversal of 21092383 is 38329012.

It is not a de Polignac number, because 21092383 - 2⁹ = 21091871 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21092353) 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, 22698 + ... + 23608.

It is an arithmetic number, because the mean of its divisors is an integer number (1919304).

Almost surely, 2^21092383 is an apocalyptic number.

21092383 is a deficient number, since it is larger than the sum of its proper divisors (1939265).

21092383 is a wasteful number, since it uses less digits than its factorization.

21092383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074 (or 1061 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 21092383 is about 4592.6444451971. The cubic root of 21092383 is about 276.2963935923.

The spelling of 21092383 in words is "twenty-one million, ninety-two thousand, three hundred eighty-three".