1215488 has 22 divisors (see below), whose sum is σ = 2431836. Its totient is φ = 607232.

The previous prime is 1215463. The next prime is 1215497. The reversal of 1215488 is 8845121.

It is a super-2 number, since 2×1215488² = 2954822156288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1215488.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431 + ... + 1617.

It is an arithmetic number, because the mean of its divisors is an integer number (110538).

2^1215488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1215918).

1215488 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1215488 is an equidigital number, since it uses as much as digits as its factorization.

1215488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207 (or 1189 counting only the distinct ones).

The product of its digits is 2560, while the sum is 29.

The square root of 1215488 is about 1102.4917233249. The cubic root of 1215488 is about 106.7210833454.

The spelling of 1215488 in words is "one million, two hundred fifteen thousand, four hundred eighty-eight".