1428728585730 has 64 divisors (see below), whose sum is σ = 3432413657088. Its totient is φ = 380609507520.

The previous prime is 1428728585729. The next prime is 1428728585761. The reversal of 1428728585730 is 375858278241.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151939209 + ... + 151948611.

It is an arithmetic number, because the mean of its divisors is an integer number (53631463392).

Almost surely, 2^{1428728585730} is an apocalyptic number.

1428728585730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1428728585730 is an abundant number, since it is smaller than the sum of its proper divisors (2003685071358).

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

1428728585730 is a wasteful number, since it uses less digits than its factorization.

1428728585730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13991.

The product of its (nonzero) digits is 30105600, while the sum is 60.

The spelling of 1428728585730 in words is "one trillion, four hundred twenty-eight billion, seven hundred twenty-eight million, five hundred eighty-five thousand, seven hundred thirty".