1215780082 has 8 divisors (see below), whose sum is σ = 1989458352. Its totient is φ = 552627300.

The previous prime is 1215780061. The next prime is 1215780121. The reversal of 1215780082 is 2800875121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27631344 + ... + 27631387.

It is an arithmetic number, because the mean of its divisors is an integer number (248682294).

Almost surely, 2^1215780082 is an apocalyptic number.

1215780082 is a deficient number, since it is larger than the sum of its proper divisors (773678270).

1215780082 is a wasteful number, since it uses less digits than its factorization.

1215780082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55262744.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 1215780082 is about 34868.0381151564. The cubic root of 1215780082 is about 1067.2963102635.

The spelling of 1215780082 in words is "one billion, two hundred fifteen million, seven hundred eighty thousand, eighty-two".