28325947 has 8 divisors (see below), whose sum is σ = 30935520. Its totient is φ = 25777920.

The previous prime is 28325933. The next prime is 28325951. The reversal of 28325947 is 74952382.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28325947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28325747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14422 + ... + 16267.

It is an arithmetic number, because the mean of its divisors is an integer number (3866940).

Almost surely, 2^28325947 is an apocalyptic number.

28325947 is a deficient number, since it is larger than the sum of its proper divisors (2609573).

28325947 is a wasteful number, since it uses less digits than its factorization.

28325947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30773.

The product of its digits is 120960, while the sum is 40.

The square root of 28325947 is about 5322.2126037955. The cubic root of 28325947 is about 304.8326484949.

The spelling of 28325947 in words is "twenty-eight million, three hundred twenty-five thousand, nine hundred forty-seven".