28534247 has 8 divisors (see below), whose sum is σ = 33024000. Its totient is φ = 24147864.

The previous prime is 28534243. The next prime is 28534249. The reversal of 28534247 is 74243582.

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

It is a cyclic number.

It is not a de Polignac number, because 28534247 - 2² = 28534243 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 (28534243) 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, 25247 + ... + 26352.

It is an arithmetic number, because the mean of its divisors is an integer number (4128000).

Almost surely, 2^28534247 is an apocalyptic number.

28534247 is a deficient number, since it is larger than the sum of its proper divisors (4489753).

28534247 is an equidigital number, since it uses as much as digits as its factorization.

28534247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51685.

The product of its digits is 53760, while the sum is 35.

The square root of 28534247 is about 5341.7456884431. The cubic root of 28534247 is about 305.5780384461.

The spelling of 28534247 in words is "twenty-eight million, five hundred thirty-four thousand, two hundred forty-seven".