28079575 has 12 divisors (see below), whose sum is σ = 35410680. Its totient is φ = 22081760.

The previous prime is 28079533. The next prime is 28079591. The reversal of 28079575 is 57597082.

It is not a de Polignac number, because 28079575 - 2¹³ = 28071383 is a prime.

It is a congruent number.

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, 8044 + ... + 10993.

It is an arithmetic number, because the mean of its divisors is an integer number (2950890).

Almost surely, 2^28079575 is an apocalyptic number.

28079575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28079575 is a deficient number, since it is larger than the sum of its proper divisors (7331105).

28079575 is a wasteful number, since it uses less digits than its factorization.

28079575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19106 (or 19101 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 28079575 is about 5299.0164181667. The cubic root of 28079575 is about 303.9462876884.

The spelling of 28079575 in words is "twenty-eight million, seventy-nine thousand, five hundred seventy-five".