11972823 has 8 divisors (see below), whose sum is σ = 16119168. Its totient is φ = 7904184.

The previous prime is 11972783. The next prime is 11972837. The reversal of 11972823 is 32827911.

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

It is a de Polignac number, because none of the positive numbers 2^k-11972823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11971823) 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, 19065 + ... + 19682.

It is an arithmetic number, because the mean of its divisors is an integer number (2014896).

Almost surely, 2^11972823 is an apocalyptic number.

11972823 is a deficient number, since it is larger than the sum of its proper divisors (4146345).

11972823 is a wasteful number, since it uses less digits than its factorization.

11972823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38853.

The product of its digits is 6048, while the sum is 33.

The square root of 11972823 is about 3460.1767295906. The cubic root of 11972823 is about 228.7698850999.

The spelling of 11972823 in words is "eleven million, nine hundred seventy-two thousand, eight hundred twenty-three".