21322294 has 32 divisors (see below), whose sum is σ = 39052800. Its totient is φ = 8527680.

The previous prime is 21322291. The next prime is 21322297. The reversal of 21322294 is 49222312.

It is an interprime number because it is at equal distance from previous prime (21322291) and next prime (21322297).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18322 + ... + 19450.

It is an arithmetic number, because the mean of its divisors is an integer number (1220400).

Almost surely, 2^21322294 is an apocalyptic number.

21322294 is a deficient number, since it is larger than the sum of its proper divisors (17730506).

21322294 is a wasteful number, since it uses less digits than its factorization.

21322294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228.

The product of its digits is 1728, while the sum is 25.

The square root of 21322294 is about 4617.6069559892. The cubic root of 21322294 is about 277.2966624472.

The spelling of 21322294 in words is "twenty-one million, three hundred twenty-two thousand, two hundred ninety-four".