28088070 has 32 divisors (see below), whose sum is σ = 67571712. Its totient is φ = 7472352.

The previous prime is 28088059. The next prime is 28088087. The reversal of 28088070 is 7088082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16059 + ... + 17721.

It is an arithmetic number, because the mean of its divisors is an integer number (2111616).

Almost surely, 2^28088070 is an apocalyptic number.

28088070 is an abundant number, since it is smaller than the sum of its proper divisors (39483642).

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

28088070 is a wasteful number, since it uses less digits than its factorization.

28088070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 28088070 is about 5299.8179214007. The cubic root of 28088070 is about 303.9769358656.

It can be divided in two parts, 2808 and 8070, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 28088070 in words is "twenty-eight million, eighty-eight thousand, seventy".