1428728728580 has 48 divisors (see below), whose sum is σ = 3033970986816. Its totient is φ = 565103502720.

The previous prime is 1428728728573. The next prime is 1428728728591. The reversal of 1428728728580 is 858278278241.

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, 540707 + ... + 1774773.

It is an arithmetic number, because the mean of its divisors is an integer number (63207728892).

Almost surely, 2^{1428728728580} is an apocalyptic number.

1428728728580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428728728580 is an abundant number, since it is smaller than the sum of its proper divisors (1605242258236).

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

1428728728580 is a wasteful number, since it uses less digits than its factorization.

1428728728580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234724 (or 1234722 counting only the distinct ones).

The product of its (nonzero) digits is 32112640, while the sum is 62.

The spelling of 1428728728580 in words is "one trillion, four hundred twenty-eight billion, seven hundred twenty-eight million, seven hundred twenty-eight thousand, five hundred eighty".