28640095 has 12 divisors (see below), whose sum is σ = 37777320. Its totient is φ = 20828720.

The previous prime is 28640069. The next prime is 28640119. The reversal of 28640095 is 59004682.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-28640095 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28640095.

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, 23065 + ... + 24274.

It is an arithmetic number, because the mean of its divisors is an integer number (3148110).

Almost surely, 2^28640095 is an apocalyptic number.

28640095 is a deficient number, since it is larger than the sum of its proper divisors (9137225).

28640095 is a wasteful number, since it uses less digits than its factorization.

28640095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47366 (or 47355 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 28640095 is about 5351.6441398882. The cubic root of 28640095 is about 305.9554201934.

The spelling of 28640095 in words is "twenty-eight million, six hundred forty thousand, ninety-five".