1254563268 has 36 divisors (see below), whose sum is σ = 3405244752. Its totient is φ = 358446480.

The previous prime is 1254563257. The next prime is 1254563269. The reversal of 1254563268 is 8623654521.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1254563269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1066218 + ... + 1067393.

It is an arithmetic number, because the mean of its divisors is an integer number (94590132).

Almost surely, 2^1254563268 is an apocalyptic number.

It is an amenable number.

1254563268 is an abundant number, since it is smaller than the sum of its proper divisors (2150681484).

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

1254563268 is a wasteful number, since it uses less digits than its factorization.

1254563268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133632 (or 2133623 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 1254563268 is about 35419.8146240208. The cubic root of 1254563268 is about 1078.5265881760.

The spelling of 1254563268 in words is "one billion, two hundred fifty-four million, five hundred sixty-three thousand, two hundred sixty-eight".