28251123 has 8 divisors (see below), whose sum is σ = 37704336. Its totient is φ = 18816000.

The previous prime is 28251109. The next prime is 28251143. The reversal of 28251123 is 32115282.

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

It is not a de Polignac number, because 28251123 - 2⁸ = 28250867 is a prime.

It is a super-3 number, since 3×28251123³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 28251093 and 28251102.

It is not an unprimeable number, because it can be changed into a prime (28251143) 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, 318 + ... + 7523.

It is an arithmetic number, because the mean of its divisors is an integer number (4713042).

Almost surely, 2^28251123 is an apocalyptic number.

28251123 is a deficient number, since it is larger than the sum of its proper divisors (9453213).

28251123 is a wasteful number, since it uses less digits than its factorization.

28251123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9045.

The product of its digits is 960, while the sum is 24.

The square root of 28251123 is about 5315.1785482710. The cubic root of 28251123 is about 304.5640030367.

The spelling of 28251123 in words is "twenty-eight million, two hundred fifty-one thousand, one hundred twenty-three".