20389254 has 8 divisors (see below), whose sum is σ = 40778520. Its totient is φ = 6796416.

The previous prime is 20389249. The next prime is 20389297. The reversal of 20389254 is 45298302.

It is a happy number.

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

20389254 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1699099 + ... + 1699110.

It is an arithmetic number, because the mean of its divisors is an integer number (5097315).

Almost surely, 2^20389254 is an apocalyptic number.

20389254 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20389254 is a wasteful number, since it uses less digits than its factorization.

20389254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3398214.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 20389254 is about 4515.4461573581. The cubic root of 20389254 is about 273.1914555513.

The spelling of 20389254 in words is "twenty million, three hundred eighty-nine thousand, two hundred fifty-four".