20833090 has 16 divisors (see below), whose sum is σ = 37975680. Its totient is φ = 8227440.

The previous prime is 20833073. The next prime is 20833091. The reversal of 20833090 is 9033802.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20833091) 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, 12396 + ... + 13975.

It is an arithmetic number, because the mean of its divisors is an integer number (2373480).

Almost surely, 2^20833090 is an apocalyptic number.

20833090 is a deficient number, since it is larger than the sum of its proper divisors (17142590).

20833090 is a wasteful number, since it uses less digits than its factorization.

20833090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26457.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20833090 is about 4564.3279899674. The cubic root of 20833090 is about 275.1595327784.

Adding to 20833090 its reverse (9033802), we get a palindrome (29866892).

The spelling of 20833090 in words is "twenty million, eight hundred thirty-three thousand, ninety".