28632265 has 8 divisors (see below), whose sum is σ = 35287560. Its totient is φ = 22286592.

The previous prime is 28632257. The next prime is 28632271. The reversal of 28632265 is 56223682.

It can be written as a sum of positive squares in 4 ways, for example, as 14047504 + 14584761 = 3748^2 + 3819^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28632265 - 2³ = 28632257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28632265.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77200 + ... + 77569.

It is an arithmetic number, because the mean of its divisors is an integer number (4410945).

Almost surely, 2^28632265 is an apocalyptic number.

It is an amenable number.

28632265 is a deficient number, since it is larger than the sum of its proper divisors (6655295).

28632265 is a wasteful number, since it uses less digits than its factorization.

28632265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154811.

The product of its digits is 34560, while the sum is 34.

The square root of 28632265 is about 5350.9125389974. The cubic root of 28632265 is about 305.9275356340.

The spelling of 28632265 in words is "twenty-eight million, six hundred thirty-two thousand, two hundred sixty-five".