20392394 has 16 divisors (see below), whose sum is σ = 34521120. Its totient is φ = 8949360.

The previous prime is 20392373. The next prime is 20392397. The reversal of 20392394 is 49329302.

It is a self number, because there is not a number n which added to its sum of digits gives 20392394.

It is not an unprimeable number, because it can be changed into a prime (20392397) 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 7 ways as a sum of consecutive naturals, for example, 15344 + ... + 16619.

It is an arithmetic number, because the mean of its divisors is an integer number (2157570).

Almost surely, 2^20392394 is an apocalyptic number.

20392394 is a deficient number, since it is larger than the sum of its proper divisors (14128726).

20392394 is a wasteful number, since it uses less digits than its factorization.

20392394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32005.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 20392394 is about 4515.7938394041. The cubic root of 20392394 is about 273.2054789046.

The spelling of 20392394 in words is "twenty million, three hundred ninety-two thousand, three hundred ninety-four".