1218252 has 24 divisors (see below), whose sum is σ = 3248896. Its totient is φ = 348048.

The previous prime is 1218251. The next prime is 1218257. The reversal of 1218252 is 2528121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1218251) 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, 7168 + ... + 7335.

2^1218252 is an apocalyptic number.

1218252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1218252 is an abundant number, since it is smaller than the sum of its proper divisors (2030644).

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

1218252 is a wasteful number, since it uses less digits than its factorization.

1218252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14517 (or 14515 counting only the distinct ones).

The product of its digits is 320, while the sum is 21.

The square root of 1218252 is about 1103.7445356603. The cubic root of 1218252 is about 106.8019161098.

It can be divided in two parts, 1218 and 252, that multiplied together give a triangular number (306936 = T₇₈₃).

The spelling of 1218252 in words is "one million, two hundred eighteen thousand, two hundred fifty-two".