21774314 has 8 divisors (see below), whose sum is σ = 34582788. Its totient is φ = 10246720.

The previous prime is 21774289. The next prime is 21774317. The reversal of 21774314 is 41347712.

It can be written as a sum of positive squares in 2 ways, for example, as 20839225 + 935089 = 4565^2 + 967^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21774317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320177 + ... + 320244.

Almost surely, 2^21774314 is an apocalyptic number.

21774314 is a deficient number, since it is larger than the sum of its proper divisors (12808474).

21774314 is a wasteful number, since it uses less digits than its factorization.

21774314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640440.

The product of its digits is 4704, while the sum is 29.

The square root of 21774314 is about 4666.2955328612. The cubic root of 21774314 is about 279.2424847706.

The spelling of 21774314 in words is "twenty-one million, seven hundred seventy-four thousand, three hundred fourteen".