20238938 has 8 divisors (see below), whose sum is σ = 30382560. Its totient is φ = 10111420.

The previous prime is 20238937. The next prime is 20238973. The reversal of 20238938 is 83983202.

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

It is a super-2 number, since 2×20238938² = 819229222735688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20238898 and 20238907.

It is not an unprimeable number, because it can be changed into a prime (20238937) 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, 128 + ... + 6363.

It is an arithmetic number, because the mean of its divisors is an integer number (3797820).

Almost surely, 2^20238938 is an apocalyptic number.

20238938 is a deficient number, since it is larger than the sum of its proper divisors (10143622).

20238938 is a wasteful number, since it uses less digits than its factorization.

20238938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8052.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 20238938 is about 4498.7707209859. The cubic root of 20238938 is about 272.5184478154.

The spelling of 20238938 in words is "twenty million, two hundred thirty-eight thousand, nine hundred thirty-eight".