20939214 has 8 divisors (see below), whose sum is σ = 41878440. Its totient is φ = 6979736.

The previous prime is 20939213. The next prime is 20939231. The reversal of 20939214 is 41293902.

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

20939214 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20939213) 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, 1744929 + ... + 1744940.

It is an arithmetic number, because the mean of its divisors is an integer number (5234805).

Almost surely, 2^20939214 is an apocalyptic number.

20939214 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20939214 is a wasteful number, since it uses less digits than its factorization.

20939214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3489874.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 20939214 is about 4575.9385922453. The cubic root of 20939214 is about 275.6259636126.

The spelling of 20939214 in words is "twenty million, nine hundred thirty-nine thousand, two hundred fourteen".