20832890 has 16 divisors (see below), whose sum is σ = 40384008. Its totient is φ = 7692096.

The previous prime is 20832881. The next prime is 20832901. The reversal of 20832890 is 9823802.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18054001 + 2778889 = 4249^2 + 1667^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79997 + ... + 80256.

Almost surely, 2^20832890 is an apocalyptic number.

20832890 is a deficient number, since it is larger than the sum of its proper divisors (19551118).

20832890 is a wasteful number, since it uses less digits than its factorization.

20832890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160273.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 20832890 is about 4564.3060808846. The cubic root of 20832890 is about 275.1586522548.

The spelling of 20832890 in words is "twenty million, eight hundred thirty-two thousand, eight hundred ninety".