28134078 has 16 divisors (see below), whose sum is σ = 64306560. Its totient is φ = 8038296.

The previous prime is 28134053. The next prime is 28134101. The reversal of 28134078 is 87043182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334888 + ... + 334971.

It is an arithmetic number, because the mean of its divisors is an integer number (4019160).

Almost surely, 2^28134078 is an apocalyptic number.

28134078 is an abundant number, since it is smaller than the sum of its proper divisors (36172482).

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

28134078 is a wasteful number, since it uses less digits than its factorization.

28134078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669871.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 28134078 is about 5304.1566718942. The cubic root of 28134078 is about 304.1428158025.

The spelling of 28134078 in words is "twenty-eight million, one hundred thirty-four thousand, seventy-eight".