20320046 has 8 divisors (see below), whose sum is σ = 30776304. Its totient is φ = 10061280.

The previous prime is 20320043. The next prime is 20320057. The reversal of 20320046 is 64002302.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320043) 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, 49115 + ... + 49526.

It is an arithmetic number, because the mean of its divisors is an integer number (3847038).

Almost surely, 2^20320046 is an apocalyptic number.

20320046 is a deficient number, since it is larger than the sum of its proper divisors (10456258).

20320046 is a wasteful number, since it uses less digits than its factorization.

20320046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98746.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20320046 is about 4507.7761701309. The cubic root of 20320046 is about 272.8820038671.

Adding to 20320046 its reverse (64002302), we get a palindrome (84322348).

The spelling of 20320046 in words is "twenty million, three hundred twenty thousand, forty-six".