194807040 has 144 divisors (see below), whose sum is σ = 629780928. Its totient is φ = 51314688.

The previous prime is 194807021. The next prime is 194807101. The reversal of 194807040 is 40708491.

It is a junction number, because it is equal to n+sod(n) for n = 194806992 and 194807010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372219 + ... + 372741.

Almost surely, 2^194807040 is an apocalyptic number.

194807040 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 194807040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314890464).

194807040 is an abundant number, since it is smaller than the sum of its proper divisors (434973888).

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

194807040 is an equidigital number, since it uses as much as digits as its factorization.

194807040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 194807040 is about 13957.3292574188. The cubic root of 194807040 is about 579.6976624829.

The spelling of 194807040 in words is "one hundred ninety-four million, eight hundred seven thousand, forty".