194385240 has 96 divisors (see below), whose sum is σ = 722011680. Its totient is φ = 44430336.

The previous prime is 194385239. The next prime is 194385277. The reversal of 194385240 is 42583491.

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 = 194385195 and 194385204.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 36049 + ... + 41088.

It is an arithmetic number, because the mean of its divisors is an integer number (7520955).

Almost surely, 2^194385240 is an apocalyptic number.

194385240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194385240 is an abundant number, since it is smaller than the sum of its proper divisors (527626440).

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

194385240 is a wasteful number, since it uses less digits than its factorization.

194385240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77161 (or 77154 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 194385240 is about 13942.2107285753. The cubic root of 194385240 is about 579.2789692572.

The spelling of 194385240 in words is "one hundred ninety-four million, three hundred eighty-five thousand, two hundred forty".