28707134 has 8 divisors (see below), whose sum is σ = 44111088. Its totient is φ = 14003440.

The previous prime is 28707131. The next prime is 28707139. The reversal of 28707134 is 43170782.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28707134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28707131) 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, 174962 + ... + 175125.

It is an arithmetic number, because the mean of its divisors is an integer number (5513886).

Almost surely, 2^28707134 is an apocalyptic number.

28707134 is a deficient number, since it is larger than the sum of its proper divisors (15403954).

28707134 is a wasteful number, since it uses less digits than its factorization.

28707134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350130.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 28707134 is about 5357.9038811834. The cubic root of 28707134 is about 306.1939548142.

The spelling of 28707134 in words is "twenty-eight million, seven hundred seven thousand, one hundred thirty-four".