28161486 has 32 divisors (see below), whose sum is σ = 66264480. Its totient is φ = 8834688.

The previous prime is 28161481. The next prime is 28161487. The reversal of 28161486 is 68416182.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28161486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28161481) 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, 14421 + ... + 16256.

It is an arithmetic number, because the mean of its divisors is an integer number (2070765).

Almost surely, 2^28161486 is an apocalyptic number.

28161486 is an abundant number, since it is smaller than the sum of its proper divisors (38102994).

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

28161486 is a wasteful number, since it uses less digits than its factorization.

28161486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30705 (or 30699 counting only the distinct ones).

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

The square root of 28161486 is about 5306.7396770522. The cubic root of 28161486 is about 304.2415482700.

The spelling of 28161486 in words is "twenty-eight million, one hundred sixty-one thousand, four hundred eighty-six".