28150835 has 4 divisors (see below), whose sum is σ = 33781008. Its totient is φ = 22520664.

The previous prime is 28150831. The next prime is 28150841. The reversal of 28150835 is 53805182.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53805182 = 2 ⋅26902591.

It is a cyclic number.

It is not a de Polignac number, because 28150835 - 2² = 28150831 is a prime.

It is a super-2 number, since 2×28150835² = 1584939022394450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28150831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2815079 + ... + 2815088.

It is an arithmetic number, because the mean of its divisors is an integer number (8445252).

Almost surely, 2^28150835 is an apocalyptic number.

28150835 is a deficient number, since it is larger than the sum of its proper divisors (5630173).

28150835 is an equidigital number, since it uses as much as digits as its factorization.

28150835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5630172.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 28150835 is about 5305.7360469590. The cubic root of 28150835 is about 304.2031875416.

The spelling of 28150835 in words is "twenty-eight million, one hundred fifty thousand, eight hundred thirty-five".