28947282 has 32 divisors (see below), whose sum is σ = 71256192. Its totient is φ = 7634304.

The previous prime is 28947257. The next prime is 28947293. The reversal of 28947282 is 28274982.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25963 + ... + 27054.

It is an arithmetic number, because the mean of its divisors is an integer number (2226756).

Almost surely, 2^28947282 is an apocalyptic number.

28947282 is an abundant number, since it is smaller than the sum of its proper divisors (42308910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28947282 is a wasteful number, since it uses less digits than its factorization.

28947282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53042.

The product of its digits is 129024, while the sum is 42.

The square root of 28947282 is about 5380.2678371992. The cubic root of 28947282 is about 307.0454013711.

The spelling of 28947282 in words is "twenty-eight million, nine hundred forty-seven thousand, two hundred eighty-two".