20450850 has 48 divisors (see below), whose sum is σ = 57966528. Its totient is φ = 4674240.

The previous prime is 20450839. The next prime is 20450861. The reversal of 20450850 is 5805402.

It is an interprime number because it is at equal distance from previous prime (20450839) and next prime (20450861).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20450850.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8689 + ... + 10788.

It is an arithmetic number, because the mean of its divisors is an integer number (1207636).

Almost surely, 2^20450850 is an apocalyptic number.

20450850 is an abundant number, since it is smaller than the sum of its proper divisors (37515678).

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

20450850 is a wasteful number, since it uses less digits than its factorization.

20450850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19499 (or 19494 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 20450850 is about 4522.2616023401. The cubic root of 20450850 is about 273.4662830653.

The spelling of 20450850 in words is "twenty million, four hundred fifty thousand, eight hundred fifty".