1823864 has 16 divisors (see below), whose sum is σ = 3908400. Its totient is φ = 781632.

The previous prime is 1823863. The next prime is 1823903. The reversal of 1823864 is 4683281.

It is a self number, because there is not a number n which added to its sum of digits gives 1823864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1823863) 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, 16229 + ... + 16340.

It is an arithmetic number, because the mean of its divisors is an integer number (244275).

2^1823864 is an apocalyptic number.

1823864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1823864 is an abundant number, since it is smaller than the sum of its proper divisors (2084536).

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

1823864 is a wasteful number, since it uses less digits than its factorization.

1823864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32582 (or 32578 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 1823864 is about 1350.5050906976. The cubic root of 1823864 is about 122.1792581159.

The spelling of 1823864 in words is "one million, eight hundred twenty-three thousand, eight hundred sixty-four".