21296022 has 32 divisors (see below), whose sum is σ = 48487680. Its totient is φ = 6172320.

The previous prime is 21296021. The next prime is 21296027. The reversal of 21296022 is 22069212.

It is a junction number, because it is equal to n+sod(n) for n = 21295983 and 21296001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21296021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5497 + ... + 8532.

It is an arithmetic number, because the mean of its divisors is an integer number (1515240).

Almost surely, 2^21296022 is an apocalyptic number.

21296022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21296022 is an abundant number, since it is smaller than the sum of its proper divisors (27191658).

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

21296022 is a wasteful number, since it uses less digits than its factorization.

21296022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14068.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 21296022 is about 4614.7613156045. The cubic root of 21296022 is about 277.1827264254.

The spelling of 21296022 in words is "twenty-one million, two hundred ninety-six thousand, twenty-two".