20164194 has 32 divisors (see below), whose sum is σ = 45576000. Its totient is φ = 6606432.

The previous prime is 20164163. The next prime is 20164219. The reversal of 20164194 is 49146102.

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

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 22 + ... + 6350.

It is an arithmetic number, because the mean of its divisors is an integer number (1424250).

Almost surely, 2^20164194 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20164194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22788000).

20164194 is an abundant number, since it is smaller than the sum of its proper divisors (25411806).

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

20164194 is a wasteful number, since it uses less digits than its factorization.

20164194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6399 (or 6393 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20164194 is about 4490.4558788613. The cubic root of 20164194 is about 272.1825565850.

The spelling of 20164194 in words is "twenty million, one hundred sixty-four thousand, one hundred ninety-four".