194466640 has 40 divisors (see below), whose sum is σ = 462657888. Its totient is φ = 75976320.

The previous prime is 194466631. The next prime is 194466659. The reversal of 194466640 is 46664491.

194466640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 194466593 and 194466602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24826 + ... + 31705.

Almost surely, 2^194466640 is an apocalyptic number.

194466640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194466640 is an abundant number, since it is smaller than the sum of its proper divisors (268191248).

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

194466640 is a wasteful number, since it uses less digits than its factorization.

194466640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56587 (or 56581 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 194466640 is about 13945.1296157476. The cubic root of 194466640 is about 579.3598168355.

The spelling of 194466640 in words is "one hundred ninety-four million, four hundred sixty-six thousand, six hundred forty".