28883501 has 6 divisors (see below), whose sum is σ = 29101002. Its totient is φ = 28667600.

The previous prime is 28883479. The next prime is 28883513. The reversal of 28883501 is 10538882.

It can be written as a sum of positive squares in 3 ways, for example, as 4726276 + 24157225 = 2174^2 + 4915^2 .

It is not a de Polignac number, because 28883501 - 2¹⁴ = 28867117 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 (28883531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21551 + ... + 22851.

It is an arithmetic number, because the mean of its divisors is an integer number (4850167).

Almost surely, 2^28883501 is an apocalyptic number.

It is an amenable number.

28883501 is a deficient number, since it is larger than the sum of its proper divisors (217501).

28883501 is an equidigital number, since it uses as much as digits as its factorization.

28883501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599 (or 1450 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 28883501 is about 5374.3372614677. The cubic root of 28883501 is about 306.8197260256.

The spelling of 28883501 in words is "twenty-eight million, eight hundred eighty-three thousand, five hundred one".