28055146 has 24 divisors (see below), whose sum is σ = 50003136. Its totient is φ = 11765880.

The previous prime is 28055143. The next prime is 28055201. The reversal of 28055146 is 64155082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28055143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1561 + ... + 7651.

It is an arithmetic number, because the mean of its divisors is an integer number (2083464).

Almost surely, 2^28055146 is an apocalyptic number.

28055146 is a deficient number, since it is larger than the sum of its proper divisors (21947990).

28055146 is a wasteful number, since it uses less digits than its factorization.

28055146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6154 (or 6147 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 28055146 is about 5296.7108661886. The cubic root of 28055146 is about 303.8581185219.

The spelling of 28055146 in words is "twenty-eight million, fifty-five thousand, one hundred forty-six".