20389074 has 8 divisors (see below), whose sum is σ = 40778160. Its totient is φ = 6796356.

The previous prime is 20389073. The next prime is 20389081. The reversal of 20389074 is 47098302.

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

20389074 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20389073) by changing a digit.

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, 1699084 + ... + 1699095.

It is an arithmetic number, because the mean of its divisors is an integer number (5097270).

Almost surely, 2^20389074 is an apocalyptic number.

20389074 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.

20389074 is a wasteful number, since it uses less digits than its factorization.

20389074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3398184.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 20389074 is about 4515.4262257289. The cubic root of 20389074 is about 273.1906516212.

The spelling of 20389074 in words is "twenty million, three hundred eighty-nine thousand, seventy-four".