28296123 has 8 divisors (see below), whose sum is σ = 37759488. Its totient is φ = 18848424.

The previous prime is 28296119. The next prime is 28296133. The reversal of 28296123 is 32169282.

It is a happy number.

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

It is not a de Polignac number, because 28296123 - 2² = 28296119 is a prime.

It is a super-2 number, since 2×28296123² = 1601341153662258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28296113) 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, 1290 + ... + 7632.

It is an arithmetic number, because the mean of its divisors is an integer number (4719936).

Almost surely, 2^28296123 is an apocalyptic number.

28296123 is a deficient number, since it is larger than the sum of its proper divisors (9463365).

28296123 is a wasteful number, since it uses less digits than its factorization.

28296123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7833.

The product of its digits is 10368, while the sum is 33.

The square root of 28296123 is about 5319.4100236774. The cubic root of 28296123 is about 304.7256262244.

The spelling of 28296123 in words is "twenty-eight million, two hundred ninety-six thousand, one hundred twenty-three".