28107263 has 8 divisors (see below), whose sum is σ = 29190336. Its totient is φ = 27043200.

The previous prime is 28107257. The next prime is 28107271. The reversal of 28107263 is 36270182.

It is a happy number.

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 28107263 - 2⁶ = 28107199 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 (28107253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1703 + ... + 7688.

It is an arithmetic number, because the mean of its divisors is an integer number (3648792).

Almost surely, 2^28107263 is an apocalyptic number.

28107263 is a deficient number, since it is larger than the sum of its proper divisors (1083073).

28107263 is an equidigital number, since it uses as much as digits as its factorization.

28107263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9505.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 28107263 is about 5301.6283347666. The cubic root of 28107263 is about 304.0461574362.

The spelling of 28107263 in words is "twenty-eight million, one hundred seven thousand, two hundred sixty-three".