1215345000 has 80 divisors (see below), whose sum is σ = 3796784640. Its totient is φ = 324088000.

The previous prime is 1215344993. The next prime is 1215345041. The reversal of 1215345000 is 5435121.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25512 + ... + 55511.

It is an arithmetic number, because the mean of its divisors is an integer number (47459808).

Almost surely, 2^1215345000 is an apocalyptic number.

1215345000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1215345000 is an abundant number, since it is smaller than the sum of its proper divisors (2581439640).

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

1215345000 is an equidigital number, since it uses as much as digits as its factorization.

1215345000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81052 (or 81033 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1215345000 is about 34861.7985766655. The cubic root of 1215345000 is about 1067.1689799940.

The spelling of 1215345000 in words is "one billion, two hundred fifteen million, three hundred forty-five thousand".