194172120 has 128 divisors (see below), whose sum is σ = 651801600. Its totient is φ = 51414912.

The previous prime is 194172107. The next prime is 194172161. The reversal of 194172120 is 21271491.

194172120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175489 + ... + 176591.

It is an arithmetic number, because the mean of its divisors is an integer number (5092200).

Almost surely, 2^194172120 is an apocalyptic number.

194172120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194172120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325900800).

194172120 is an abundant number, since it is smaller than the sum of its proper divisors (457629480).

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

194172120 is a wasteful number, since it uses less digits than its factorization.

194172120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286 (or 1276 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 194172120 is about 13934.5656552330. The cubic root of 194172120 is about 579.0671886378.

The spelling of 194172120 in words is "one hundred ninety-four million, one hundred seventy-two thousand, one hundred twenty".