1215162 has 40 divisors (see below), whose sum is σ = 2937396. Its totient is φ = 373248.

The previous prime is 1215161. The next prime is 1215167. The reversal of 1215162 is 2615121.

It can be written as a sum of positive squares in 2 ways, for example, as 1185921 + 29241 = 1089^2 + 171^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1215161) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1818 + ... + 2394.

2^1215162 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215162, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1468698).

1215162 is an abundant number, since it is smaller than the sum of its proper divisors (1722234).

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

1215162 is a wasteful number, since it uses less digits than its factorization.

1215162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 595 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 1215162 is about 1102.3438664954. The cubic root of 1215162 is about 106.7115414483.

The spelling of 1215162 in words is "one million, two hundred fifteen thousand, one hundred sixty-two".