28146575 has 12 divisors (see below), whose sum is σ = 34988088. Its totient is φ = 22461600.

The previous prime is 28146571. The next prime is 28146583. The reversal of 28146575 is 57564182.

It is not a de Polignac number, because 28146575 - 2² = 28146571 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28146571) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 11129 + ... + 13421.

It is an arithmetic number, because the mean of its divisors is an integer number (2915674).

Almost surely, 2^28146575 is an apocalyptic number.

28146575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28146575 is a deficient number, since it is larger than the sum of its proper divisors (6841513).

28146575 is a wasteful number, since it uses less digits than its factorization.

28146575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2794 (or 2789 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 28146575 is about 5305.3345794587. The cubic root of 28146575 is about 304.1878419819.

The spelling of 28146575 in words is "twenty-eight million, one hundred forty-six thousand, five hundred seventy-five".