1428252128628 has 48 divisors (see below), whose sum is σ = 3744982179456. Its totient is φ = 420355140480.

The previous prime is 1428252128617. The next prime is 1428252128689. The reversal of 1428252128628 is 8268212528241.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199028203 + ... + 199035378.

It is an arithmetic number, because the mean of its divisors is an integer number (78020462072).

Almost surely, 2^{1428252128628} is an apocalyptic number.

It is an amenable number.

1428252128628 is an abundant number, since it is smaller than the sum of its proper divisors (2316730050828).

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

1428252128628 is a wasteful number, since it uses less digits than its factorization.

1428252128628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398063624 (or 398063622 counting only the distinct ones).

The product of its digits is 1966080, while the sum is 51.

The spelling of 1428252128628 in words is "one trillion, four hundred twenty-eight billion, two hundred fifty-two million, one hundred twenty-eight thousand, six hundred twenty-eight".