20238937 has 2 divisors, whose sum is σ = 20238938. Its totient is φ = 20238936.

The previous prime is 20238929. The next prime is 20238973. The reversal of 20238937 is 73983202.

Together with next prime (20238973) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19501056 + 737881 = 4416^2 + 859^2 .

It is a cyclic number.

It is not a de Polignac number, because 20238937 - 2³ = 20238929 is a prime.

It is a super-2 number, since 2×20238937² = 819229141779938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20238917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10119468 + 10119469.

It is an arithmetic number, because the mean of its divisors is an integer number (10119469).

Almost surely, 2^20238937 is an apocalyptic number.

It is an amenable number.

20238937 is a deficient number, since it is larger than the sum of its proper divisors (1).

20238937 is an equidigital number, since it uses as much as digits as its factorization.

20238937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 20238937 is about 4498.7706098444. The cubic root of 20238937 is about 272.5184433271.

The spelling of 20238937 in words is "twenty million, two hundred thirty-eight thousand, nine hundred thirty-seven".