28507675 has 12 divisors (see below), whose sum is σ = 40399696. Its totient is φ = 19548000.

The previous prime is 28507663. The next prime is 28507697. The reversal of 28507675 is 57670582.

It is not a de Polignac number, because 28507675 - 2⁵ = 28507643 is a prime.

It is a Duffinian 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, 81276 + ... + 81625.

Almost surely, 2^28507675 is an apocalyptic number.

28507675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28507675 is a deficient number, since it is larger than the sum of its proper divisors (11892021).

28507675 is a wasteful number, since it uses less digits than its factorization.

28507675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162918 (or 162913 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 28507675 is about 5339.2579072377. The cubic root of 28507675 is about 305.4831543182.

The spelling of 28507675 in words is "twenty-eight million, five hundred seven thousand, six hundred seventy-five".