1247760480 has 48 divisors (see below), whose sum is σ = 3930447024. Its totient is φ = 332736000.

The previous prime is 1247760473. The next prime is 1247760499. The reversal of 1247760480 is 840677421.

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

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 1299271 + ... + 1300230.

It is an arithmetic number, because the mean of its divisors is an integer number (81884313).

Almost surely, 2^1247760480 is an apocalyptic number.

1247760480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1247760480 is an abundant number, since it is smaller than the sum of its proper divisors (2682686544).

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

1247760480 is a wasteful number, since it uses less digits than its factorization.

1247760480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599519 (or 2599511 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 1247760480 is about 35323.6532651989. The cubic root of 1247760480 is about 1076.5736404954.

The spelling of 1247760480 in words is "one billion, two hundred forty-seven million, seven hundred sixty thousand, four hundred eighty".