28043130 has 16 divisors (see below), whose sum is σ = 67303584. Its totient is φ = 7478160.

The previous prime is 28043129. The next prime is 28043131. The reversal of 28043130 is 3134082.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28043129) and next prime (28043131).

It is a junction number, because it is equal to n+sod(n) for n = 28043097 and 28043106.

It is not an unprimeable number, because it can be changed into a prime (28043131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467356 + ... + 467415.

It is an arithmetic number, because the mean of its divisors is an integer number (4206474).

Almost surely, 2^28043130 is an apocalyptic number.

28043130 is an abundant number, since it is smaller than the sum of its proper divisors (39260454).

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

28043130 is a wasteful number, since it uses less digits than its factorization.

28043130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934781.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 28043130 is about 5295.5764558733. The cubic root of 28043130 is about 303.8147315851.

The spelling of 28043130 in words is "twenty-eight million, forty-three thousand, one hundred thirty".