1247380652 has 36 divisors (see below), whose sum is σ = 2587243680. Its totient is φ = 524500704.

The previous prime is 1247380621. The next prime is 1247380681. The reversal of 1247380652 is 2560837421.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 49652 + ... + 70427.

It is an arithmetic number, because the mean of its divisors is an integer number (71867880).

Almost surely, 2^1247380652 is an apocalyptic number.

It is an amenable number.

1247380652 is an abundant number, since it is smaller than the sum of its proper divisors (1339863028).

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

1247380652 is a wasteful number, since it uses less digits than its factorization.

1247380652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120150 (or 120141 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 1247380652 is about 35318.2764585137. The cubic root of 1247380652 is about 1076.4643902778.

The spelling of 1247380652 in words is "one billion, two hundred forty-seven million, three hundred eighty thousand, six hundred fifty-two".