28947295 has 16 divisors (see below), whose sum is σ = 37521792. Its totient is φ = 21312000.

The previous prime is 28947293. The next prime is 28947313. The reversal of 28947295 is 59274982.

It is not a de Polignac number, because 28947295 - 2¹ = 28947293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28947293) 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, 38170 + ... + 38920.

It is an arithmetic number, because the mean of its divisors is an integer number (2345112).

Almost surely, 2^28947295 is an apocalyptic number.

28947295 is a deficient number, since it is larger than the sum of its proper divisors (8574497).

28947295 is a wasteful number, since it uses less digits than its factorization.

28947295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362.

The product of its digits is 362880, while the sum is 46.

The square root of 28947295 is about 5380.2690453173. The cubic root of 28947295 is about 307.0454473350.

The spelling of 28947295 in words is "twenty-eight million, nine hundred forty-seven thousand, two hundred ninety-five".