194746428 has 72 divisors (see below), whose sum is σ = 540758400. Its totient is φ = 58820256.

The previous prime is 194746417. The next prime is 194746439. The reversal of 194746428 is 824647491.

It is an interprime number because it is at equal distance from previous prime (194746417) and next prime (194746439).

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, 9543 + ... + 21921.

Almost surely, 2^194746428 is an apocalyptic number.

194746428 is a gapful number since it is divisible by the number (18) 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 194746428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270379200).

194746428 is an abundant number, since it is smaller than the sum of its proper divisors (346011972).

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

194746428 is a wasteful number, since it uses less digits than its factorization.

194746428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12431 (or 12426 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 194746428 is about 13955.1577561846. The cubic root of 194746428 is about 579.6375341298.

The spelling of 194746428 in words is "one hundred ninety-four million, seven hundred forty-six thousand, four hundred twenty-eight".