28247534 has 8 divisors (see below), whose sum is σ = 48424368. Its totient is φ = 12106080.

The previous prime is 28247533. The next prime is 28247543. The reversal of 28247534 is 43574282.

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

It is a junction number, because it is equal to n+sod(n) for n = 28247494 and 28247503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28247533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008827 + ... + 1008854.

It is an arithmetic number, because the mean of its divisors is an integer number (6053046).

Almost surely, 2^28247534 is an apocalyptic number.

28247534 is a deficient number, since it is larger than the sum of its proper divisors (20176834).

28247534 is a wasteful number, since it uses less digits than its factorization.

28247534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017690.

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

The square root of 28247534 is about 5314.8409195384. The cubic root of 28247534 is about 304.5511053016.

The spelling of 28247534 in words is "twenty-eight million, two hundred forty-seven thousand, five hundred thirty-four".