20214237 has 4 divisors (see below), whose sum is σ = 26952320. Its totient is φ = 13476156.

The previous prime is 20214223. The next prime is 20214269. The reversal of 20214237 is 73241202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20214237 - 2⁷ = 20214109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20214287) 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, 3369037 + ... + 3369042.

It is an arithmetic number, because the mean of its divisors is an integer number (6738080).

Almost surely, 2^20214237 is an apocalyptic number.

It is an amenable number.

20214237 is a deficient number, since it is larger than the sum of its proper divisors (6738083).

20214237 is an equidigital number, since it uses as much as digits as its factorization.

20214237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6738082.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20214237 is about 4496.0245773350. The cubic root of 20214237 is about 272.4075358931.

Adding to 20214237 its reverse (73241202), we get a palindrome (93455439).

The spelling of 20214237 in words is "twenty million, two hundred fourteen thousand, two hundred thirty-seven".