194423238 has 48 divisors (see below), whose sum is σ = 444787200. Its totient is φ = 61207920.

The previous prime is 194423183. The next prime is 194423249. The reversal of 194423238 is 832324491.

It is a congruent number.

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, 146743 + ... + 148061.

It is an arithmetic number, because the mean of its divisors is an integer number (9266400).

Almost surely, 2^194423238 is an apocalyptic number.

194423238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 194423238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222393600).

194423238 is an abundant number, since it is smaller than the sum of its proper divisors (250363962).

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

194423238 is a wasteful number, since it uses less digits than its factorization.

194423238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777 (or 1774 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 194423238 is about 13943.5733583612. The cubic root of 194423238 is about 579.3167121918.

The spelling of 194423238 in words is "one hundred ninety-four million, four hundred twenty-three thousand, two hundred thirty-eight".