1428728574 has 96 divisors (see below), whose sum is σ = 3603985056. Its totient is φ = 374250240.

The previous prime is 1428728563. The next prime is 1428728611. The reversal of 1428728574 is 4758278241.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 598864 + ... + 601244.

It is an arithmetic number, because the mean of its divisors is an integer number (37541511).

Almost surely, 2^1428728574 is an apocalyptic number.

1428728574 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1428728574, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1801992528).

1428728574 is an abundant number, since it is smaller than the sum of its proper divisors (2175256482).

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

1428728574 is a wasteful number, since it uses less digits than its factorization.

1428728574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570 (or 2563 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 48.

The square root of 1428728574 is about 37798.5260823752. The cubic root of 1428728574 is about 1126.2891753608.

The spelling of 1428728574 in words is "one billion, four hundred twenty-eight million, seven hundred twenty-eight thousand, five hundred seventy-four".