21446322 has 16 divisors (see below), whose sum is σ = 42978432. Its totient is φ = 7134480.

The previous prime is 21446317. The next prime is 21446329. The reversal of 21446322 is 22364412.

It is a junction number, because it is equal to n+sod(n) for n = 21446292 and 21446301.

It is not an unprimeable number, because it can be changed into a prime (21446329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58 + ... + 6549.

It is an arithmetic number, because the mean of its divisors is an integer number (2686152).

Almost surely, 2^21446322 is an apocalyptic number.

21446322 is an abundant number, since it is smaller than the sum of its proper divisors (21532110).

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

21446322 is a wasteful number, since it uses less digits than its factorization.

21446322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7153.

The product of its digits is 2304, while the sum is 24.

The square root of 21446322 is about 4631.0173828221. The cubic root of 21446322 is about 277.8332851326.

The spelling of 21446322 in words is "twenty-one million, four hundred forty-six thousand, three hundred twenty-two".