1571428728730 has 32 divisors (see below), whose sum is σ = 3268975345920. Its totient is φ = 532721904000.

The previous prime is 1571428728721. The next prime is 1571428728733. The reversal of 1571428728730 is 378278241751.

It is not an unprimeable number, because it can be changed into a prime (1571428728733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126111646 + ... + 126124105.

It is an arithmetic number, because the mean of its divisors is an integer number (102155479560).

Almost surely, 2^{1571428728730} is an apocalyptic number.

1571428728730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1571428728730 is an abundant number, since it is smaller than the sum of its proper divisors (1697546617190).

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

1571428728730 is a wasteful number, since it uses less digits than its factorization.

1571428728730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252235854.

The product of its (nonzero) digits is 5268480, while the sum is 55.

The spelling of 1571428728730 in words is "one trillion, five hundred seventy-one billion, four hundred twenty-eight million, seven hundred twenty-eight thousand, seven hundred thirty".