220001886 has 64 divisors (see below), whose sum is σ = 533299200. Its totient is φ = 66819168.

The previous prime is 220001869. The next prime is 220001897. The reversal of 220001886 is 688100022.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53475 + ... + 57441.

It is an arithmetic number, because the mean of its divisors is an integer number (8332800).

Almost surely, 2^220001886 is an apocalyptic number.

220001886 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 220001886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266649600).

220001886 is an abundant number, since it is smaller than the sum of its proper divisors (313297314).

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

220001886 is a wasteful number, since it uses less digits than its factorization.

220001886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070 (or 4064 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 220001886 is about 14832.4605511021. The cubic root of 220001886 is about 603.6827987392.

The spelling of 220001886 in words is "two hundred twenty million, one thousand, eight hundred eighty-six".