20388334 has 16 divisors (see below), whose sum is σ = 31852800. Its totient is φ = 9775584.

The previous prime is 20388323. The next prime is 20388353. The reversal of 20388334 is 43388302.

It is a junction number, because it is equal to n+sod(n) for n = 20388296 and 20388305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7987 + ... + 10225.

It is an arithmetic number, because the mean of its divisors is an integer number (1990800).

Almost surely, 2^20388334 is an apocalyptic number.

20388334 is a deficient number, since it is larger than the sum of its proper divisors (11464466).

20388334 is a wasteful number, since it uses less digits than its factorization.

20388334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 20388334 is about 4515.3442836621. The cubic root of 20388334 is about 273.1873465254.

The spelling of 20388334 in words is "twenty million, three hundred eighty-eight thousand, three hundred thirty-four".