20724214 has 8 divisors (see below), whose sum is σ = 35527248. Its totient is φ = 8881800.

The previous prime is 20724211. The next prime is 20724217. The reversal of 20724214 is 41242702.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20724211) and next prime (20724217).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20724211) 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, 740137 + ... + 740164.

It is an arithmetic number, because the mean of its divisors is an integer number (4440906).

Almost surely, 2^20724214 is an apocalyptic number.

20724214 is a deficient number, since it is larger than the sum of its proper divisors (14803034).

20724214 is a wasteful number, since it uses less digits than its factorization.

20724214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480310.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 20724214 is about 4552.3855284894. The cubic root of 20724214 is about 274.6793574142.

Adding to 20724214 its reverse (41242702), we get a palindrome (61966916).

The spelling of 20724214 in words is "twenty million, seven hundred twenty-four thousand, two hundred fourteen".