1252247616 has 84 divisors (see below), whose sum is σ = 3595878000. Its totient is φ = 416656128.

The previous prime is 1252247609. The next prime is 1252247629. The reversal of 1252247616 is 6167422521.

It is a happy number.

1252247616 is a `hidden beast` number, since 12 + 5 + 2 + 24 + 7 + 616 = 666.

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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 377935 + ... + 381233.

Almost surely, 2^1252247616 is an apocalyptic number.

1252247616 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 1252247616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1797939000).

1252247616 is an abundant number, since it is smaller than the sum of its proper divisors (2343630384).

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

1252247616 is a wasteful number, since it uses less digits than its factorization.

1252247616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976 (or 3963 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 1252247616 is about 35387.1108738761. The cubic root of 1252247616 is about 1077.8626040092.

The spelling of 1252247616 in words is "one billion, two hundred fifty-two million, two hundred forty-seven thousand, six hundred sixteen".