20238394 has 8 divisors (see below), whose sum is σ = 33117408. Its totient is φ = 9199260.

The previous prime is 20238391. The next prime is 20238403. The reversal of 20238394 is 49383202.

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

It is not an unprimeable number, because it can be changed into a prime (20238391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459942 + ... + 459985.

It is an arithmetic number, because the mean of its divisors is an integer number (4139676).

Almost surely, 2^20238394 is an apocalyptic number.

20238394 is a deficient number, since it is larger than the sum of its proper divisors (12879014).

20238394 is a wasteful number, since it uses less digits than its factorization.

20238394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919940.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 20238394 is about 4498.7102596189. The cubic root of 20238394 is about 272.5160061299.

The spelling of 20238394 in words is "twenty million, two hundred thirty-eight thousand, three hundred ninety-four".