1247364768 has 48 divisors (see below), whose sum is σ = 3526207776. Its totient is φ = 383804160.

The previous prime is 1247364721. The next prime is 1247364799. The reversal of 1247364768 is 8674637421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498498 + ... + 500993.

It is an arithmetic number, because the mean of its divisors is an integer number (73462662).

Almost surely, 2^1247364768 is an apocalyptic number.

It is an amenable number.

1247364768 is an abundant number, since it is smaller than the sum of its proper divisors (2278843008).

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

1247364768 is a wasteful number, since it uses less digits than its factorization.

1247364768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999517 (or 999509 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 48.

The square root of 1247364768 is about 35318.0515883875. The cubic root of 1247364768 is about 1076.4598210677.

The spelling of 1247364768 in words is "one billion, two hundred forty-seven million, three hundred sixty-four thousand, seven hundred sixty-eight".