1283728503 has 8 divisors (see below), whose sum is σ = 1720240000. Its totient is φ = 851518008.

The previous prime is 1283728489. The next prime is 1283728519. The reversal of 1283728503 is 3058273821.

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

It is not a de Polignac number, because 1283728503 - 2⁴ = 1283728487 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 (1283728543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1074553 + ... + 1075746.

It is an arithmetic number, because the mean of its divisors is an integer number (215030000).

Almost surely, 2^1283728503 is an apocalyptic number.

1283728503 is a deficient number, since it is larger than the sum of its proper divisors (436511497).

1283728503 is a wasteful number, since it uses less digits than its factorization.

1283728503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150501.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 1283728503 is about 35829.1571628471. The cubic root of 1283728503 is about 1086.8202657261.

The spelling of 1283728503 in words is "one billion, two hundred eighty-three million, seven hundred twenty-eight thousand, five hundred three".