28047546 has 28 divisors (see below), whose sum is σ = 63081402. Its totient is φ = 9348696.

The previous prime is 28047541. The next prime is 28047563. The reversal of 28047546 is 64574082.

It can be written as a sum of positive squares in only one way, i.e., 27154521 + 893025 = 5211^2 + 945^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28047546.

It is not an unprimeable number, because it can be changed into a prime (28047541) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 8161 + ... + 11076.

Almost surely, 2^28047546 is an apocalyptic number.

28047546 is an abundant number, since it is smaller than the sum of its proper divisors (35033856).

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

28047546 is an equidigital number, since it uses as much as digits as its factorization.

28047546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19257 (or 19242 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 28047546 is about 5295.9933912345. The cubic root of 28047546 is about 303.8306781579.

The spelling of 28047546 in words is "twenty-eight million, forty-seven thousand, five hundred forty-six".