28153075 has 12 divisors (see below), whose sum is σ = 34980400. Its totient is φ = 22476960.

The previous prime is 28153067. The next prime is 28153121. The reversal of 28153075 is 57035182.

It is not a de Polignac number, because 28153075 - 2³ = 28153067 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17401 + ... + 18949.

Almost surely, 2^28153075 is an apocalyptic number.

28153075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28153075 is a deficient number, since it is larger than the sum of its proper divisors (6827325).

28153075 is a wasteful number, since it uses less digits than its factorization.

28153075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286 (or 2281 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 28153075 is about 5305.9471350552. The cubic root of 28153075 is about 304.2112559472.

The spelling of 28153075 in words is "twenty-eight million, one hundred fifty-three thousand, seventy-five".