1247240484 has 192 divisors, whose sum is σ = 4016947200. Its totient is φ = 326592000.

The previous prime is 1247240461. The next prime is 1247240507. The reversal of 1247240484 is 4840427421.

1247240484 is a `hidden beast` number, since 1 + 247 + 2 + 404 + 8 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1247240461) and next prime (1247240507).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 443884 + ... + 446684.

It is an arithmetic number, because the mean of its divisors is an integer number (20921600).

Almost surely, 2^1247240484 is an apocalyptic number.

1247240484 is a gapful number since it is divisible by the number (14) 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 1247240484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2008473600).

1247240484 is an abundant number, since it is smaller than the sum of its proper divisors (2769706716).

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

1247240484 is a wasteful number, since it uses less digits than its factorization.

1247240484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871 (or 2863 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 36.

The square root of 1247240484 is about 35316.2920477221. The cubic root of 1247240484 is about 1076.4240680467.

The spelling of 1247240484 in words is "one billion, two hundred forty-seven million, two hundred forty thousand, four hundred eighty-four".