28095830 has 32 divisors (see below), whose sum is σ = 58895424. Its totient is φ = 9449856.

The previous prime is 28095817. The next prime is 28095853. The reversal of 28095830 is 3859082.

It is a super-3 number, since 3×28095830³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

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, 77 + ... + 7496.

It is an arithmetic number, because the mean of its divisors is an integer number (1840482).

Almost surely, 2^28095830 is an apocalyptic number.

28095830 is an abundant number, since it is smaller than the sum of its proper divisors (30799594).

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

28095830 is a wasteful number, since it uses less digits than its factorization.

28095830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7640.

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

The square root of 28095830 is about 5300.5499714652. The cubic root of 28095830 is about 304.0049269169.

It can be divided in two parts, 280 and 95830, that multiplied together give a square (26832400 = 5180²).

The spelling of 28095830 in words is "twenty-eight million, ninety-five thousand, eight hundred thirty".