28947695 has 16 divisors (see below), whose sum is σ = 40150080. Its totient is φ = 19624704.

The previous prime is 28947691. The next prime is 28947739. The reversal of 28947695 is 59674982.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28947695 - 2² = 28947691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28947691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1532 + ... + 7761.

It is an arithmetic number, because the mean of its divisors is an integer number (2509380).

Almost surely, 2^28947695 is an apocalyptic number.

28947695 is a deficient number, since it is larger than the sum of its proper divisors (11202385).

28947695 is an equidigital number, since it uses as much as digits as its factorization.

28947695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9394.

The product of its digits is 1088640, while the sum is 50.

The square root of 28947695 is about 5380.3062180512. The cubic root of 28947695 is about 307.0468616020.

The spelling of 28947695 in words is "twenty-eight million, nine hundred forty-seven thousand, six hundred ninety-five".