28461128 has 32 divisors (see below), whose sum is σ = 57477600. Its totient is φ = 13162752.

The previous prime is 28461127. The next prime is 28461133. The reversal of 28461128 is 82116482.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28461094 and 28461103.

It is not an unprimeable number, because it can be changed into a prime (28461127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6251 + ... + 9797.

It is an arithmetic number, because the mean of its divisors is an integer number (1796175).

Almost surely, 2^28461128 is an apocalyptic number.

It is an amenable number.

28461128 is an abundant number, since it is smaller than the sum of its proper divisors (29016472).

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

28461128 is a wasteful number, since it uses less digits than its factorization.

28461128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629 (or 3625 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 28461128 is about 5334.8971873880. The cubic root of 28461128 is about 305.3168006320.

The spelling of 28461128 in words is "twenty-eight million, four hundred sixty-one thousand, one hundred twenty-eight".