1215367648 has 96 divisors (see below), whose sum is σ = 2718793728. Its totient is φ = 529804800.

The previous prime is 1215367627. The next prime is 1215367667. The reversal of 1215367648 is 8467635121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1385386 + ... + 1386262.

It is an arithmetic number, because the mean of its divisors is an integer number (28320768).

Almost surely, 2^1215367648 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 1215367648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359396864).

1215367648 is an abundant number, since it is smaller than the sum of its proper divisors (1503426080).

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

1215367648 is a wasteful number, since it uses less digits than its factorization.

1215367648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056 (or 1048 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 1215367648 is about 34862.1234006192. The cubic root of 1215367648 is about 1067.1756088642.

It can be divided in two parts, 1215 and 367648, that added together give a palindrome (368863).

The spelling of 1215367648 in words is "one billion, two hundred fifteen million, three hundred sixty-seven thousand, six hundred forty-eight".