20038438 has 8 divisors (see below), whose sum is σ = 34351632. Its totient is φ = 8587896.

The previous prime is 20038433. The next prime is 20038453. The reversal of 20038438 is 83483002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20038433) 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, 715645 + ... + 715672.

It is an arithmetic number, because the mean of its divisors is an integer number (4293954).

Almost surely, 2^20038438 is an apocalyptic number.

20038438 is a deficient number, since it is larger than the sum of its proper divisors (14313194).

20038438 is a wasteful number, since it uses less digits than its factorization.

20038438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431326.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 20038438 is about 4476.4313911865. The cubic root of 20038438 is about 271.6155450162.

The spelling of 20038438 in words is "twenty million, thirty-eight thousand, four hundred thirty-eight".