190668392 has 16 divisors (see below), whose sum is σ = 357660960. Its totient is φ = 95292144.

The previous prime is 190668391. The next prime is 190668397. The reversal of 190668392 is 293866091.

It is not an unprimeable number, because it can be changed into a prime (190668391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22853 + ... + 30059.

It is an arithmetic number, because the mean of its divisors is an integer number (22353810).

Almost surely, 2^190668392 is an apocalyptic number.

It is an amenable number.

190668392 is a deficient number, since it is larger than the sum of its proper divisors (166992568).

190668392 is a wasteful number, since it uses less digits than its factorization.

190668392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10520 (or 10516 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 190668392 is about 13808.2725929060. The cubic root of 190668392 is about 575.5630447013.

The spelling of 190668392 in words is "one hundred ninety million, six hundred sixty-eight thousand, three hundred ninety-two".