192640505 has 8 divisors (see below), whose sum is σ = 231265152. Its totient is φ = 154048048.

The previous prime is 192640489. The next prime is 192640507. The reversal of 192640505 is 505046291.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 192640505 - 2⁴ = 192640489 is a prime.

It is a super-2 number, since 2×192640505² = 74220728333310050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (192640507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8054 + ... + 21216.

It is an arithmetic number, because the mean of its divisors is an integer number (28908144).

Almost surely, 2^192640505 is an apocalyptic number.

It is an amenable number.

192640505 is a deficient number, since it is larger than the sum of its proper divisors (38624647).

192640505 is a wasteful number, since it uses less digits than its factorization.

192640505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16095.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 192640505 is about 13879.4994506286. The cubic root of 192640505 is about 577.5406216936.

Adding to 192640505 its reverse (505046291), we get a palindrome (697686796).

The spelling of 192640505 in words is "one hundred ninety-two million, six hundred forty thousand, five hundred five".