193904292 has 12 divisors (see below), whose sum is σ = 452443376. Its totient is φ = 64634760.

The previous prime is 193904273. The next prime is 193904317. The reversal of 193904292 is 292409391.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 193904292.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8079334 + ... + 8079357.

Almost surely, 2^193904292 is an apocalyptic number.

193904292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

193904292 is an abundant number, since it is smaller than the sum of its proper divisors (258539084).

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

193904292 is a wasteful number, since it uses less digits than its factorization.

193904292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16158698 (or 16158696 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 193904292 is about 13924.9521363630. The cubic root of 193904292 is about 578.8008239836.

The spelling of 193904292 in words is "one hundred ninety-three million, nine hundred four thousand, two hundred ninety-two".