20831514 has 32 divisors (see below), whose sum is σ = 47430144. Its totient is φ = 6037680.

The previous prime is 20831323. The next prime is 20831533. The reversal of 20831514 is 41513802.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5344 + ... + 8379.

It is an arithmetic number, because the mean of its divisors is an integer number (1482192).

Almost surely, 2^20831514 is an apocalyptic number.

20831514 is an abundant number, since it is smaller than the sum of its proper divisors (26598630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20831514 is a wasteful number, since it uses less digits than its factorization.

20831514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13762.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 20831514 is about 4564.1553435439. The cubic root of 20831514 is about 275.1525940996.

The spelling of 20831514 in words is "twenty million, eight hundred thirty-one thousand, five hundred fourteen".