1215046656 has 264 divisors, whose sum is σ = 3844757280. Its totient is φ = 382205952.

The previous prime is 1215046631. The next prime is 1215046699. The reversal of 1215046656 is 6566405121.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1215046656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4727680 + ... + 4727936.

Almost surely, 2^1215046656 is an apocalyptic number.

1215046656 is a gapful number since it is divisible by the number (16) 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 1215046656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1922378640).

1215046656 is an abundant number, since it is smaller than the sum of its proper divisors (2629710624).

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

1215046656 is an equidigital number, since it uses as much as digits as its factorization.

1215046656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1215046656 is about 34857.5193609643. The cubic root of 1215046656 is about 1067.0816496425.

The spelling of 1215046656 in words is "one billion, two hundred fifteen million, forty-six thousand, six hundred fifty-six".