21274214 has 8 divisors (see below), whose sum is σ = 34366080. Its totient is φ = 9818856.

The previous prime is 21274193. The next prime is 21274219. The reversal of 21274214 is 41247212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21274214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21274219) 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, 409094 + ... + 409145.

It is an arithmetic number, because the mean of its divisors is an integer number (4295760).

Almost surely, 2^21274214 is an apocalyptic number.

21274214 is a deficient number, since it is larger than the sum of its proper divisors (13091866).

21274214 is a wasteful number, since it uses less digits than its factorization.

21274214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818254.

The product of its digits is 896, while the sum is 23.

The square root of 21274214 is about 4612.3978579476. The cubic root of 21274214 is about 277.0880786167.

The spelling of 21274214 in words is "twenty-one million, two hundred seventy-four thousand, two hundred fourteen".