28239126 has 8 divisors (see below), whose sum is σ = 56478264. Its totient is φ = 9413040.

The previous prime is 28239083. The next prime is 28239131. The reversal of 28239126 is 62193282.

It is a happy number.

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

28239126 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2353255 + ... + 2353266.

It is an arithmetic number, because the mean of its divisors is an integer number (7059783).

Almost surely, 2^28239126 is an apocalyptic number.

28239126 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28239126 is a wasteful number, since it uses less digits than its factorization.

28239126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4706526.

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

The square root of 28239126 is about 5314.0498680385. The cubic root of 28239126 is about 304.5208853209.

The spelling of 28239126 in words is "twenty-eight million, two hundred thirty-nine thousand, one hundred twenty-six".