21327026 has 32 divisors (see below), whose sum is σ = 38568960. Its totient is φ = 8647056.

The previous prime is 21327013. The next prime is 21327043. The reversal of 21327026 is 62072312.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 21326992 and 21327010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34145 + ... + 34763.

It is an arithmetic number, because the mean of its divisors is an integer number (1205280).

Almost surely, 2^21327026 is an apocalyptic number.

21327026 is a deficient number, since it is larger than the sum of its proper divisors (17241934).

21327026 is a wasteful number, since it uses less digits than its factorization.

21327026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 21327026 is about 4618.1193141797. The cubic root of 21327026 is about 277.3171741669.

Adding to 21327026 its reverse (62072312), we get a palindrome (83399338).

The spelling of 21327026 in words is "twenty-one million, three hundred twenty-seven thousand, twenty-six".