28732803 has 8 divisors (see below), whose sum is σ = 41793216. Its totient is φ = 17413800.

The previous prime is 28732801. The next prime is 28732811. The reversal of 28732803 is 30823782.

It is a happy number.

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

It is not a de Polignac number, because 28732803 - 2¹ = 28732801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 870691 = 28732803 / (2 + 8 + 7 + 3 + 2 + 8 + 0 + 3).

It is not an unprimeable number, because it can be changed into a prime (28732801) 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, 435313 + ... + 435378.

It is an arithmetic number, because the mean of its divisors is an integer number (5224152).

Almost surely, 2^28732803 is an apocalyptic number.

28732803 is a deficient number, since it is larger than the sum of its proper divisors (13060413).

28732803 is a wasteful number, since it uses less digits than its factorization.

28732803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870705.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 28732803 is about 5360.2987789861. The cubic root of 28732803 is about 306.2851905695.

The spelling of 28732803 in words is "twenty-eight million, seven hundred thirty-two thousand, eight hundred three".