21895314 has 16 divisors (see below), whose sum is σ = 50046528. Its totient is φ = 6255792.

The previous prime is 21895309. The next prime is 21895343. The reversal of 21895314 is 41359812.

It is a Curzon 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, 260617 + ... + 260700.

It is an arithmetic number, because the mean of its divisors is an integer number (3127908).

Almost surely, 2^21895314 is an apocalyptic number.

21895314 is an abundant number, since it is smaller than the sum of its proper divisors (28151214).

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

21895314 is a wasteful number, since it uses less digits than its factorization.

21895314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521329.

The product of its digits is 8640, while the sum is 33.

The square root of 21895314 is about 4679.2428874766. The cubic root of 21895314 is about 279.7587803445.

It can be divided in two parts, 2189 and 5314, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 21895314 in words is "twenty-one million, eight hundred ninety-five thousand, three hundred fourteen".