20830046 has 4 divisors (see below), whose sum is σ = 31245072. Its totient is φ = 10415022.

The previous prime is 20830037. The next prime is 20830057. The reversal of 20830046 is 64003802.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5207510 + ... + 5207513.

It is an arithmetic number, because the mean of its divisors is an integer number (7811268).

Almost surely, 2^20830046 is an apocalyptic number.

20830046 is a deficient number, since it is larger than the sum of its proper divisors (10415026).

20830046 is a wasteful number, since it uses less digits than its factorization.

20830046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10415025.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 20830046 is about 4563.9945223455. The cubic root of 20830046 is about 275.1461305992.

Adding to 20830046 its reverse (64003802), we get a palindrome (84833848).

The spelling of 20830046 in words is "twenty million, eight hundred thirty thousand, forty-six".