21827714 has 4 divisors (see below), whose sum is σ = 32741574. Its totient is φ = 10913856.

The previous prime is 21827683. The next prime is 21827717. The reversal of 21827714 is 41772812.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20857489 + 970225 = 4567^2 + 985^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21827717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5456927 + ... + 5456930.

Almost surely, 2^21827714 is an apocalyptic number.

21827714 is a deficient number, since it is larger than the sum of its proper divisors (10913860).

21827714 is a wasteful number, since it uses less digits than its factorization.

21827714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10913859.

The product of its digits is 6272, while the sum is 32.

The square root of 21827714 is about 4672.0139126505. The cubic root of 21827714 is about 279.4705727129.

The spelling of 21827714 in words is "twenty-one million, eight hundred twenty-seven thousand, seven hundred fourteen".