1215295488 has 364 divisors, whose sum is σ = 4082459928. Its totient is φ = 358318080.

The previous prime is 1215295483. The next prime is 1215295519. The reversal of 1215295488 is 8845925121.

1215295488 is a `hidden beast` number, since 12 + 152 + 9 + 5 + 488 = 666.

Its product of digits (230400) is a multiple of the sum of its prime factors (90).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215295481) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 32845806 + ... + 32845842.

Almost surely, 2^1215295488 is an apocalyptic number.

1215295488 is a gapful number since it is divisible by the number (18) 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 1215295488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2041229964).

1215295488 is an abundant number, since it is smaller than the sum of its proper divisors (2867164440).

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

1215295488 is an frugal number, since it uses more digits than its factorization.

1215295488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 53 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The square root of 1215295488 is about 34861.0884511657. The cubic root of 1215295488 is about 1067.1544879806.

The spelling of 1215295488 in words is "one billion, two hundred fifteen million, two hundred ninety-five thousand, four hundred eighty-eight".