28273395 has 32 divisors (see below), whose sum is σ = 47867904. Its totient is φ = 14227200.

The previous prime is 28273373. The next prime is 28273409. The reversal of 28273395 is 59337282.

It is not a de Polignac number, because 28273395 - 2¹⁵ = 28240627 is a prime.

It is a super-3 number, since 3×28273395³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18324 + ... + 19806.

It is an arithmetic number, because the mean of its divisors is an integer number (1495872).

Almost surely, 2^28273395 is an apocalyptic number.

28273395 is a deficient number, since it is larger than the sum of its proper divisors (19594509).

28273395 is a wasteful number, since it uses less digits than its factorization.

28273395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563.

The product of its digits is 90720, while the sum is 39.

The square root of 28273395 is about 5317.2732673806. The cubic root of 28273395 is about 304.6440171741.

The spelling of 28273395 in words is "twenty-eight million, two hundred seventy-three thousand, three hundred ninety-five".