11723812 has 24 divisors (see below), whose sum is σ = 22140216. Its totient is φ = 5411328.

The previous prime is 11723753. The next prime is 11723843. The reversal of 11723812 is 21832711.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8433216 + 3290596 = 2904^2 + 1814^2 .

It is a super-2 number, since 2×11723812² = 274895535622688, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1978 + ... + 5230.

It is an arithmetic number, because the mean of its divisors is an integer number (922509).

Almost surely, 2^11723812 is an apocalyptic number.

It is an amenable number.

11723812 is a deficient number, since it is larger than the sum of its proper divisors (10416404).

11723812 is a wasteful number, since it uses less digits than its factorization.

11723812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327 (or 3325 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 11723812 is about 3424.0052570053. The cubic root of 11723812 is about 227.1727743363.

The spelling of 11723812 in words is "eleven million, seven hundred twenty-three thousand, eight hundred twelve".