21726092 has 6 divisors (see below), whose sum is σ = 38020668. Its totient is φ = 10863044.

The previous prime is 21726073. The next prime is 21726113. The reversal of 21726092 is 29062712.

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 as a sum of consecutive naturals, namely, 2715758 + ... + 2715765.

It is an arithmetic number, because the mean of its divisors is an integer number (6336778).

Almost surely, 2^21726092 is an apocalyptic number.

It is an amenable number.

21726092 is a deficient number, since it is larger than the sum of its proper divisors (16294576).

21726092 is a wasteful number, since it uses less digits than its factorization.

21726092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5431527 (or 5431525 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 21726092 is about 4661.1256151277. The cubic root of 21726092 is about 279.0361930240.

The spelling of 21726092 in words is "twenty-one million, seven hundred twenty-six thousand, ninety-two".