21733226 has 16 divisors (see below), whose sum is σ = 34473600. Its totient is φ = 10247328.

The previous prime is 21733219. The next prime is 21733241. The reversal of 21733226 is 62233712.

It is a super-2 number, since 2×21733226² = 944666224734152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21733195 and 21733204.

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, 7886 + ... + 10278.

It is an arithmetic number, because the mean of its divisors is an integer number (2154600).

Almost surely, 2^21733226 is an apocalyptic number.

21733226 is a deficient number, since it is larger than the sum of its proper divisors (12740374).

21733226 is a wasteful number, since it uses less digits than its factorization.

21733226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653.

The product of its digits is 3024, while the sum is 26.

The square root of 21733226 is about 4661.8908181123. The cubic root of 21733226 is about 279.0667312106.

Adding to 21733226 its reverse (62233712), we get a palindrome (83966938).

The spelling of 21733226 in words is "twenty-one million, seven hundred thirty-three thousand, two hundred twenty-six".