20386850 has 48 divisors (see below), whose sum is σ = 41890176. Its totient is φ = 7320000.

The previous prime is 20386843. The next prime is 20386853. The reversal of 20386850 is 5868302.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20386853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55367 + ... + 55733.

It is an arithmetic number, because the mean of its divisors is an integer number (872712).

Almost surely, 2^20386850 is an apocalyptic number.

20386850 is an abundant number, since it is smaller than the sum of its proper divisors (21503326).

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

20386850 is a wasteful number, since it uses less digits than its factorization.

20386850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 20386850 is about 4515.1799521171. The cubic root of 20386850 is about 273.1807182274.

It can be divided in two parts, 2038 and 6850, that added together give a palindrome (8888).

The spelling of 20386850 in words is "twenty million, three hundred eighty-six thousand, eight hundred fifty".