1218264 has 32 divisors (see below), whose sum is σ = 3179520. Its totient is φ = 388256.

The previous prime is 1218263. The next prime is 1218277. The reversal of 1218264 is 4628121.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552 + ... + 1655.

It is an arithmetic number, because the mean of its divisors is an integer number (99360).

2^1218264 is an apocalyptic number.

It is an amenable number.

1218264 is an abundant number, since it is smaller than the sum of its proper divisors (1961256).

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

1218264 is a wasteful number, since it uses less digits than its factorization.

1218264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239 (or 2235 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

The square root of 1218264 is about 1103.7499716874. The cubic root of 1218264 is about 106.8022667813.

It can be divided in two parts, 12182 and 64, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 1218264 in words is "one million, two hundred eighteen thousand, two hundred sixty-four".