1247243088 has 320 divisors, whose sum is σ = 4188176384. Its totient is φ = 311040000.

The previous prime is 1247243069. The next prime is 1247243113. The reversal of 1247243088 is 8803427421.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8259813 + ... + 8259963.

Almost surely, 2^1247243088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1247243088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2094088192).

1247243088 is an abundant number, since it is smaller than the sum of its proper divisors (2940933296).

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

1247243088 is a wasteful number, since it uses less digits than its factorization.

1247243088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 1247243088 is about 35316.3289145404. The cubic root of 1247243088 is about 1076.4248171688.

The spelling of 1247243088 in words is "one billion, two hundred forty-seven million, two hundred forty-three thousand, eighty-eight".