1263432480 has 48 divisors (see below), whose sum is σ = 3979813824. Its totient is φ = 336915200.

The previous prime is 1263432463. The next prime is 1263432487. The reversal of 1263432480 is 842343621.

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

It is not an unprimeable number, because it can be changed into a prime (1263432487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1315596 + ... + 1316555.

It is an arithmetic number, because the mean of its divisors is an integer number (82912788).

Almost surely, 2^1263432480 is an apocalyptic number.

1263432480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1263432480 is an abundant number, since it is smaller than the sum of its proper divisors (2716381344).

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

1263432480 is a wasteful number, since it uses less digits than its factorization.

1263432480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2632169 (or 2632161 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 1263432480 is about 35544.7953996081. The cubic root of 1263432480 is about 1081.0621922907.

The spelling of 1263432480 in words is "one billion, two hundred sixty-three million, four hundred thirty-two thousand, four hundred eighty".