28266575 has 12 divisors (see below), whose sum is σ = 36182208. Its totient is φ = 21883200.

The previous prime is 28266571. The next prime is 28266577. The reversal of 28266575 is 57566282.

It is not a de Polignac number, because 28266575 - 2² = 28266571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28266571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17462 + ... + 19011.

It is an arithmetic number, because the mean of its divisors is an integer number (3015184).

Almost surely, 2^28266575 is an apocalyptic number.

28266575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28266575 is a deficient number, since it is larger than the sum of its proper divisors (7915633).

28266575 is a wasteful number, since it uses less digits than its factorization.

28266575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36514 (or 36509 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The square root of 28266575 is about 5316.6319225615. The cubic root of 28266575 is about 304.6195201835.

The spelling of 28266575 in words is "twenty-eight million, two hundred sixty-six thousand, five hundred seventy-five".