20851334 has 16 divisors (see below), whose sum is σ = 35935008. Its totient is φ = 8888832.

The previous prime is 20851331. The next prime is 20851361. The reversal of 20851334 is 43315802.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20851331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1157 + ... + 6560.

It is an arithmetic number, because the mean of its divisors is an integer number (2245938).

Almost surely, 2^20851334 is an apocalyptic number.

20851334 is a deficient number, since it is larger than the sum of its proper divisors (15083674).

20851334 is a wasteful number, since it uses less digits than its factorization.

20851334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7919.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20851334 is about 4566.3260943564. The cubic root of 20851334 is about 275.2398304499.

The spelling of 20851334 in words is "twenty million, eight hundred fifty-one thousand, three hundred thirty-four".