28986146 has 12 divisors (see below), whose sum is σ = 50578038. Its totient is φ = 12422592.

The previous prime is 28986137. The next prime is 28986149. The reversal of 28986146 is 64168982.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22458121 + 6528025 = 4739^2 + 2555^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28986097 and 28986106.

It is not an unprimeable number, because it can be changed into a prime (28986149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147791 + ... + 147986.

Almost surely, 2^28986146 is an apocalyptic number.

28986146 is a deficient number, since it is larger than the sum of its proper divisors (21591892).

28986146 is a wasteful number, since it uses less digits than its factorization.

28986146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295793 (or 295786 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 28986146 is about 5383.8783418647. The cubic root of 28986146 is about 307.1827507789.

The spelling of 28986146 in words is "twenty-eight million, nine hundred eighty-six thousand, one hundred forty-six".