1215002880 has 864 divisors, whose sum is σ = 5535479040. Its totient is φ = 238878720.

The previous prime is 1215002837. The next prime is 1215002881. The reversal of 1215002880 is 882005121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215002881) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19918050 + ... + 19918110.

Almost surely, 2^1215002880 is an apocalyptic number.

1215002880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215002880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2767739520).

1215002880 is an abundant number, since it is smaller than the sum of its proper divisors (4320476160).

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

1215002880 is a wasteful number, since it uses less digits than its factorization.

1215002880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 1215002880 is about 34856.8914276646. The cubic root of 1215002880 is about 1067.0688344618.

The spelling of 1215002880 in words is "one billion, two hundred fifteen million, two thousand, eight hundred eighty".