194473440 has 384 divisors, whose sum is σ = 798336000. Its totient is φ = 43296768.

The previous prime is 194473439. The next prime is 194473469. The reversal of 194473440 is 44374491.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 194473395 and 194473404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1784106 + ... + 1784214.

It is an arithmetic number, because the mean of its divisors is an integer number (2079000).

Almost surely, 2^194473440 is an apocalyptic number.

194473440 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 194473440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399168000).

194473440 is an abundant number, since it is smaller than the sum of its proper divisors (603862560).

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

194473440 is a wasteful number, since it uses less digits than its factorization.

194473440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 194473440 is about 13945.3734263375. The cubic root of 194473440 is about 579.3665696661.

The spelling of 194473440 in words is "one hundred ninety-four million, four hundred seventy-three thousand, four hundred forty".