1215448 has 48 divisors (see below), whose sum is σ = 2635200. Its totient is φ = 524160.

The previous prime is 1215439. The next prime is 1215451. The reversal of 1215448 is 8445121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39193 + ... + 39223.

It is an arithmetic number, because the mean of its divisors is an integer number (54900).

2^1215448 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 1215448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1317600).

1215448 is an abundant number, since it is smaller than the sum of its proper divisors (1419752).

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

1215448 is a wasteful number, since it uses less digits than its factorization.

1215448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 75 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 1215448 is about 1102.4735824499. The cubic root of 1215448 is about 106.7199126523.

The spelling of 1215448 in words is "one million, two hundred fifteen thousand, four hundred forty-eight".