194327640 has 128 divisors (see below), whose sum is σ = 697636800. Its totient is φ = 47831040.

The previous prime is 194327603. The next prime is 194327641. The reversal of 194327640 is 46723491.

194327640 is a `hidden beast` number, since 1 + 9 + 4 + 3 + 2 + 7 + 640 = 666.

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 = 194327595 and 194327604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194327641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7120 + ... + 20960.

Almost surely, 2^194327640 is an apocalyptic number.

194327640 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 194327640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348818400).

194327640 is an abundant number, since it is smaller than the sum of its proper divisors (503309160).

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

194327640 is a wasteful number, since it uses less digits than its factorization.

194327640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13874 (or 13864 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 194327640 is about 13940.1449059900. The cubic root of 194327640 is about 579.2217465228.

It can be divided in two parts, 19432 and 7640, that added together give a palindrome (27072).

The spelling of 194327640 in words is "one hundred ninety-four million, three hundred twenty-seven thousand, six hundred forty".