28142803 has 8 divisors (see below), whose sum is σ = 32090688. Its totient is φ = 24449664.

The previous prime is 28142797. The next prime is 28142809. The reversal of 28142803 is 30824182.

It is an interprime number because it is at equal distance from previous prime (28142797) and next prime (28142809).

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 28142803 - 2⁵ = 28142771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28142809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63451 + ... + 63892.

It is an arithmetic number, because the mean of its divisors is an integer number (4011336).

Almost surely, 2^28142803 is an apocalyptic number.

28142803 is a deficient number, since it is larger than the sum of its proper divisors (3947885).

28142803 is a wasteful number, since it uses less digits than its factorization.

28142803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127373.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 28142803 is about 5304.9790763018. The cubic root of 28142803 is about 304.1742530249.

Adding to 28142803 its reverse (30824182), we get a palindrome (58966985).

The spelling of 28142803 in words is "twenty-eight million, one hundred forty-two thousand, eight hundred three".