193561040 has 40 divisors (see below), whose sum is σ = 459613440. Its totient is φ = 75775616.

The previous prime is 193561021. The next prime is 193561073. The reversal of 193561040 is 40165391.

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

It is a junction number, because it is equal to n+sod(n) for n = 193560994 and 193561012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21980 + ... + 29499.

It is an arithmetic number, because the mean of its divisors is an integer number (11490336).

Almost surely, 2^193561040 is an apocalyptic number.

193561040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

193561040 is an abundant number, since it is smaller than the sum of its proper divisors (266052400).

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

193561040 is a wasteful number, since it uses less digits than its factorization.

193561040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51539 (or 51533 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 193561040 is about 13912.6216077345. The cubic root of 193561040 is about 578.4590885739.

The spelling of 193561040 in words is "one hundred ninety-three million, five hundred sixty-one thousand, forty".