11821862 has 32 divisors (see below), whose sum is σ = 20357568. Its totient is φ = 5106816.

The previous prime is 11821853. The next prime is 11821871. The reversal of 11821862 is 26812811.

It is an interprime number because it is at equal distance from previous prime (11821853) and next prime (11821871).

It is a super-2 number, since 2×11821862² = 279512842294088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31508 + ... + 31880.

It is an arithmetic number, because the mean of its divisors is an integer number (636174).

Almost surely, 2^11821862 is an apocalyptic number.

11821862 is a deficient number, since it is larger than the sum of its proper divisors (8535706).

11821862 is a wasteful number, since it uses less digits than its factorization.

11821862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464.

The product of its digits is 1536, while the sum is 29.

The square root of 11821862 is about 3438.2934720585. The cubic root of 11821862 is about 227.8043232376.

The spelling of 11821862 in words is "eleven million, eight hundred twenty-one thousand, eight hundred sixty-two".