194790240 has 72 divisors (see below), whose sum is σ = 664726608. Its totient is φ = 51943680.

The previous prime is 194790203. The next prime is 194790241. The reversal of 194790240 is 42097491.

It is a tau number, because it is divible by the number of its divisors (72).

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 = 194790195 and 194790204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194790241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66196 + ... + 69075.

It is an arithmetic number, because the mean of its divisors is an integer number (9232314).

Almost surely, 2^194790240 is an apocalyptic number.

194790240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194790240 is an abundant number, since it is smaller than the sum of its proper divisors (469936368).

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

194790240 is a wasteful number, since it uses less digits than its factorization.

194790240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135292 (or 135281 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 194790240 is about 13956.7274101059. The cubic root of 194790240 is about 579.6809977862.

The spelling of 194790240 in words is "one hundred ninety-four million, seven hundred ninety thousand, two hundred forty".