2321816 has 24 divisors (see below), whose sum is σ = 5065020. Its totient is φ = 994896.

The previous prime is 2321791. The next prime is 2321821. The reversal of 2321816 is 6181232.

2321816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2321791 and 2321800.

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 5 ways as a sum of consecutive naturals, for example, 2570 + ... + 3353.

2^2321816 is an apocalyptic number.

It is an amenable number.

2321816 is an abundant number, since it is smaller than the sum of its proper divisors (2743204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2321816 is a wasteful number, since it uses less digits than its factorization.

2321816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5943 (or 5932 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 2321816 is about 1523.7506357669. The cubic root of 2321816 is about 132.4166510336.

It can be divided in two parts, 232 and 1816, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 2321816 in words is "two million, three hundred twenty-one thousand, eight hundred sixteen".