28161846 has 24 divisors (see below), whose sum is σ = 61133904. Its totient is φ = 9369360.

The previous prime is 28161839. The next prime is 28161851. The reversal of 28161846 is 64816182.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28161846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11031 + ... + 13341.

It is an arithmetic number, because the mean of its divisors is an integer number (2547246).

Almost surely, 2^28161846 is an apocalyptic number.

28161846 is an abundant number, since it is smaller than the sum of its proper divisors (32972058).

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

28161846 is a wasteful number, since it uses less digits than its factorization.

28161846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996 (or 2993 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 28161846 is about 5306.7735960751. The cubic root of 28161846 is about 304.2428446799.

The spelling of 28161846 in words is "twenty-eight million, one hundred sixty-one thousand, eight hundred forty-six".