28061128 has 8 divisors (see below), whose sum is σ = 52614630. Its totient is φ = 14030560.

The previous prime is 28061123. The next prime is 28061161. The reversal of 28061128 is 82116082.

It can be written as a sum of positive squares in only one way, i.e., 27899524 + 161604 = 5282^2 + 402^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28061096 and 28061105.

It is not an unprimeable number, because it can be changed into a prime (28061123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1753813 + ... + 1753828.

Almost surely, 2^28061128 is an apocalyptic number.

It is an amenable number.

28061128 is a deficient number, since it is larger than the sum of its proper divisors (24553502).

28061128 is a wasteful number, since it uses less digits than its factorization.

28061128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507647 (or 3507643 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 28061128 is about 5297.2755261549. The cubic root of 28061128 is about 303.8797134917.

The spelling of 28061128 in words is "twenty-eight million, sixty-one thousand, one hundred twenty-eight".