28847655 has 24 divisors (see below), whose sum is σ = 50712480. Its totient is φ = 15167040.

The previous prime is 28847627. The next prime is 28847677. The reversal of 28847655 is 55674882.

It is not a de Polignac number, because 28847655 - 2⁶ = 28847591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28847655.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 1320 + ... + 7709.

It is an arithmetic number, because the mean of its divisors is an integer number (2113020).

Almost surely, 2^28847655 is an apocalyptic number.

28847655 is a deficient number, since it is larger than the sum of its proper divisors (21864825).

28847655 is a wasteful number, since it uses less digits than its factorization.

28847655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9111 (or 9108 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 28847655 is about 5371.0013032953. The cubic root of 28847655 is about 306.6927468105.

The spelling of 28847655 in words is "twenty-eight million, eight hundred forty-seven thousand, six hundred fifty-five".