20812514 has 16 divisors (see below), whose sum is σ = 32006016. Its totient is φ = 10147200.

The previous prime is 20812513. The next prime is 20812523. The reversal of 20812514 is 41521802.

It is a self number, because there is not a number n which added to its sum of digits gives 20812514.

It is not an unprimeable number, because it can be changed into a prime (20812511) 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, 13019 + ... + 14529.

It is an arithmetic number, because the mean of its divisors is an integer number (2000376).

Almost surely, 2^20812514 is an apocalyptic number.

20812514 is a deficient number, since it is larger than the sum of its proper divisors (11193502).

20812514 is a wasteful number, since it uses less digits than its factorization.

20812514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 20812514 is about 4562.0734321140. The cubic root of 20812514 is about 275.0689149599.

The spelling of 20812514 in words is "twenty million, eight hundred twelve thousand, five hundred fourteen".