1233864 has 24 divisors (see below), whose sum is σ = 3341910. Its totient is φ = 411264.

The previous prime is 1233851. The next prime is 1233887. The reversal of 1233864 is 4683321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1232100 + 1764 = 1110^2 + 42^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8497 + ... + 8640.

2^1233864 is an apocalyptic number.

It is an amenable number.

1233864 is an abundant number, since it is smaller than the sum of its proper divisors (2108046).

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

1233864 is a wasteful number, since it uses less digits than its factorization.

1233864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17149 (or 17142 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1233864 is about 1110.7943103923. The cubic root of 1233864 is about 107.2562061383.

The spelling of 1233864 in words is "one million, two hundred thirty-three thousand, eight hundred sixty-four".