19850022 has 40 divisors (see below), whose sum is σ = 46827000. Its totient is φ = 6267456.

The previous prime is 19850021. The next prime is 19850059. The reversal of 19850022 is 22005891.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19850021) 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 19 ways as a sum of consecutive naturals, for example, 147 + ... + 6302.

It is an arithmetic number, because the mean of its divisors is an integer number (1170675).

Almost surely, 2^19850022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19850022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23413500).

19850022 is an abundant number, since it is smaller than the sum of its proper divisors (26976978).

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

19850022 is a wasteful number, since it uses less digits than its factorization.

19850022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6482 (or 6473 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 19850022 is about 4455.3363509392. The cubic root of 19850022 is about 270.7615536694.

The spelling of 19850022 in words is "nineteen million, eight hundred fifty thousand, twenty-two".