21422262 has 16 divisors (see below), whose sum is σ = 43448832. Its totient is φ = 7040040.

The previous prime is 21422231. The next prime is 21422273. The reversal of 21422262 is 26222412.

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, 24718 + ... + 25569.

It is an arithmetic number, because the mean of its divisors is an integer number (2715552).

Almost surely, 2^21422262 is an apocalyptic number.

21422262 is an abundant number, since it is smaller than the sum of its proper divisors (22026570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21422262 is a wasteful number, since it uses less digits than its factorization.

21422262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50363.

The product of its digits is 768, while the sum is 21.

The square root of 21422262 is about 4628.4189525150. The cubic root of 21422262 is about 277.7293485823.

Adding to 21422262 its reverse (26222412), we get a palindrome (47644674).

The spelling of 21422262 in words is "twenty-one million, four hundred twenty-two thousand, two hundred sixty-two".