28010285 has 8 divisors (see below), whose sum is σ = 34163736. Its totient is φ = 22040640.

The previous prime is 28010263. The next prime is 28010287. The reversal of 28010285 is 58201082.

It can be written as a sum of positive squares in 4 ways, for example, as 405769 + 27604516 = 637^2 + 5254^2 .

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

It is not a de Polignac number, because 28010285 - 2¹⁸ = 27748141 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 (28010287) 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, 45614 + ... + 46223.

It is an arithmetic number, because the mean of its divisors is an integer number (4270467).

Almost surely, 2^28010285 is an apocalyptic number.

It is an amenable number.

28010285 is a deficient number, since it is larger than the sum of its proper divisors (6153451).

28010285 is an equidigital number, since it uses as much as digits as its factorization.

28010285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91903.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 28010285 is about 5292.4743740523. The cubic root of 28010285 is about 303.6960727761.

The spelling of 28010285 in words is "twenty-eight million, ten thousand, two hundred eighty-five".