1215308970 has 96 divisors (see below), whose sum is σ = 3350692800. Its totient is φ = 304756992.

The previous prime is 1215308947. The next prime is 1215308981. The reversal of 1215308970 is 798035121.

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 47 ways as a sum of consecutive naturals, for example, 235134 + ... + 240246.

It is an arithmetic number, because the mean of its divisors is an integer number (34903050).

Almost surely, 2^1215308970 is an apocalyptic number.

1215308970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215308970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1675346400).

1215308970 is an abundant number, since it is smaller than the sum of its proper divisors (2135383830).

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

1215308970 is a wasteful number, since it uses less digits than its factorization.

1215308970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5284 (or 5281 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 1215308970 is about 34861.2818180858. The cubic root of 1215308970 is about 1067.1584341604.

The spelling of 1215308970 in words is "one billion, two hundred fifteen million, three hundred eight thousand, nine hundred seventy".