28129562 has 8 divisors (see below), whose sum is σ = 42453696. Its totient is φ = 13978332.

The previous prime is 28129559. The next prime is 28129603. The reversal of 28129562 is 26592182.

It is a happy number.

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

It is an unprimeable number.

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, 42818 + ... + 43469.

It is an arithmetic number, because the mean of its divisors is an integer number (5306712).

Almost surely, 2^28129562 is an apocalyptic number.

28129562 is a deficient number, since it is larger than the sum of its proper divisors (14324134).

28129562 is a wasteful number, since it uses less digits than its factorization.

28129562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86452.

The product of its digits is 17280, while the sum is 35.

The square root of 28129562 is about 5303.7309509439. The cubic root of 28129562 is about 304.1265415597.

The spelling of 28129562 in words is "twenty-eight million, one hundred twenty-nine thousand, five hundred sixty-two".