28907265 has 16 divisors (see below), whose sum is σ = 48686400. Its totient is φ = 14605632.

The previous prime is 28907257. The next prime is 28907279. The reversal of 28907265 is 56270982.

It is a happy number.

It is not a de Polignac number, because 28907265 - 2³ = 28907257 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50430 + ... + 50999.

It is an arithmetic number, because the mean of its divisors is an integer number (3042900).

Almost surely, 2^28907265 is an apocalyptic number.

It is an amenable number.

28907265 is a deficient number, since it is larger than the sum of its proper divisors (19779135).

28907265 is a wasteful number, since it uses less digits than its factorization.

28907265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101456.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 28907265 is about 5376.5476841557. The cubic root of 28907265 is about 306.9038486214.

The spelling of 28907265 in words is "twenty-eight million, nine hundred seven thousand, two hundred sixty-five".