11720827 has 4 divisors (see below), whose sum is σ = 11730096. Its totient is φ = 11711560.

The previous prime is 11720809. The next prime is 11720851. The reversal of 11720827 is 72802711.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 72802711 = 503 ⋅144737.

It is a cyclic number.

It is not a de Polignac number, because 11720827 - 2¹⁹ = 11196539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11720795 and 11720804.

It is not an unprimeable number, because it can be changed into a prime (11720627) 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, 2368 + ... + 5389.

It is an arithmetic number, because the mean of its divisors is an integer number (2932524).

Almost surely, 2^11720827 is an apocalyptic number.

11720827 is a deficient number, since it is larger than the sum of its proper divisors (9269).

11720827 is an equidigital number, since it uses as much as digits as its factorization.

11720827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9268.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 11720827 is about 3423.5693362338. The cubic root of 11720827 is about 227.1534925450.

The spelling of 11720827 in words is "eleven million, seven hundred twenty thousand, eight hundred twenty-seven".