194597872 has 40 divisors (see below), whose sum is σ = 432802656. Its totient is φ = 83030016.

The previous prime is 194597857. The next prime is 194597873. The reversal of 194597872 is 278795491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194597873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22368 + ... + 29824.

Almost surely, 2^194597872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194597872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216401328).

194597872 is an abundant number, since it is smaller than the sum of its proper divisors (238204784).

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

194597872 is a wasteful number, since it uses less digits than its factorization.

194597872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7705 (or 7699 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 52.

The square root of 194597872 is about 13949.8341208776. The cubic root of 194597872 is about 579.4901107363.

The spelling of 194597872 in words is "one hundred ninety-four million, five hundred ninety-seven thousand, eight hundred seventy-two".