28847161 has 16 divisors (see below), whose sum is σ = 34164736. Its totient is φ = 23841216.

The previous prime is 28847153. The next prime is 28847173. The reversal of 28847161 is 16174882.

It is not a de Polignac number, because 28847161 - 2³ = 28847153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28847161.

It is not an unprimeable number, because it can be changed into a prime (28847101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32455 + ... + 33331.

It is an arithmetic number, because the mean of its divisors is an integer number (2135296).

Almost surely, 2^28847161 is an apocalyptic number.

It is an amenable number.

28847161 is a deficient number, since it is larger than the sum of its proper divisors (5317575).

28847161 is a wasteful number, since it uses less digits than its factorization.

28847161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048.

The product of its digits is 21504, while the sum is 37.

The square root of 28847161 is about 5370.9553153978. The cubic root of 28847161 is about 306.6909961531.

The spelling of 28847161 in words is "twenty-eight million, eight hundred forty-seven thousand, one hundred sixty-one".