1263440552 has 32 divisors (see below), whose sum is σ = 2597875200. Its totient is φ = 571276800.

The previous prime is 1263440509. The next prime is 1263440567. The reversal of 1263440552 is 2550443621.

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, 20777 + ... + 54392.

It is an arithmetic number, because the mean of its divisors is an integer number (81183600).

Almost surely, 2^1263440552 is an apocalyptic number.

It is an amenable number.

1263440552 is an abundant number, since it is smaller than the sum of its proper divisors (1334434648).

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

1263440552 is a wasteful number, since it uses less digits than its factorization.

1263440552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75377 (or 75373 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 1263440552 is about 35544.9089462893. The cubic root of 1263440552 is about 1081.0644945679.

The spelling of 1263440552 in words is "one billion, two hundred sixty-three million, four hundred forty thousand, five hundred fifty-two".