1252676784 has 80 divisors (see below), whose sum is σ = 3384283392. Its totient is φ = 398517504.

The previous prime is 1252676771. The next prime is 1252676791. The reversal of 1252676784 is 4876762521.

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

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 15 ways as a sum of consecutive naturals, for example, 647082 + ... + 649014.

Almost surely, 2^1252676784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1252676784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1692141696).

1252676784 is an abundant number, since it is smaller than the sum of its proper divisors (2131606608).

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

1252676784 is a wasteful number, since it uses less digits than its factorization.

1252676784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554 (or 2548 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 48.

The square root of 1252676784 is about 35393.1742571926. The cubic root of 1252676784 is about 1077.9857243082.

The spelling of 1252676784 in words is "one billion, two hundred fifty-two million, six hundred seventy-six thousand, seven hundred eighty-four".