11992505 has 24 divisors (see below), whose sum is σ = 17291520. Its totient is φ = 7953120.

The previous prime is 11992493. The next prime is 11992511. The reversal of 11992505 is 50529911.

It is not a de Polignac number, because 11992505 - 2⁴ = 11992489 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6806 + ... + 8384.

It is an arithmetic number, because the mean of its divisors is an integer number (720480).

Almost surely, 2^11992505 is an apocalyptic number.

It is an amenable number.

11992505 is a deficient number, since it is larger than the sum of its proper divisors (5299015).

11992505 is a wasteful number, since it uses less digits than its factorization.

11992505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629 (or 1622 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 11992505 is about 3463.0196360980. The cubic root of 11992505 is about 228.8951739546.

The spelling of 11992505 in words is "eleven million, nine hundred ninety-two thousand, five hundred five".