1428728573 has 8 divisors (see below), whose sum is σ = 1436783040. Its totient is φ = 1420696800.

The previous prime is 1428728563. The next prime is 1428728611. The reversal of 1428728573 is 3758278241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1428728573 - 2¹² = 1428724477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428728563) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 129473 + ... + 140073.

It is an arithmetic number, because the mean of its divisors is an integer number (179597880).

Almost surely, 2^1428728573 is an apocalyptic number.

It is an amenable number.

1428728573 is a deficient number, since it is larger than the sum of its proper divisors (8054467).

1428728573 is a wasteful number, since it uses less digits than its factorization.

1428728573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11347.

The product of its digits is 752640, while the sum is 47.

The square root of 1428728573 is about 37798.5260691472. The cubic root of 1428728573 is about 1126.2891750981.

It can be divided in two parts, 14287 and 28573, that multiplied together give a triangular number (408222451 = T₂₈₅₇₃).

The spelling of 1428728573 in words is "one billion, four hundred twenty-eight million, seven hundred twenty-eight thousand, five hundred seventy-three".