28486166 has 4 divisors (see below), whose sum is σ = 42729252. Its totient is φ = 14243082.

The previous prime is 28486163. The next prime is 28486177. The reversal of 28486166 is 66168482.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×28486166² = 1622923306759112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28486163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7121540 + ... + 7121543.

It is an arithmetic number, because the mean of its divisors is an integer number (10682313).

Almost surely, 2^28486166 is an apocalyptic number.

28486166 is a deficient number, since it is larger than the sum of its proper divisors (14243086).

28486166 is a wasteful number, since it uses less digits than its factorization.

28486166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14243085.

The product of its digits is 110592, while the sum is 41.

The square root of 28486166 is about 5337.2432959347. The cubic root of 28486166 is about 305.4063061201.

The spelling of 28486166 in words is "twenty-eight million, four hundred eighty-six thousand, one hundred sixty-six".