20068438 has 8 divisors (see below), whose sum is σ = 32418288. Its totient is φ = 9262344.

The previous prime is 20068409. The next prime is 20068453. The reversal of 20068438 is 83486002.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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, 385906 + ... + 385957.

It is an arithmetic number, because the mean of its divisors is an integer number (4052286).

Almost surely, 2^20068438 is an apocalyptic number.

20068438 is a deficient number, since it is larger than the sum of its proper divisors (12349850).

20068438 is a wasteful number, since it uses less digits than its factorization.

20068438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771878.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 20068438 is about 4479.7810214340. The cubic root of 20068438 is about 271.7510246930.

The spelling of 20068438 in words is "twenty million, sixty-eight thousand, four hundred thirty-eight".