28460140 has 24 divisors (see below), whose sum is σ = 60131232. Its totient is φ = 11314560.

The previous prime is 28460129. The next prime is 28460161. The reversal of 28460140 is 4106482.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921 + ... + 7600.

It is an arithmetic number, because the mean of its divisors is an integer number (2505468).

Almost surely, 2^28460140 is an apocalyptic number.

28460140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28460140 is an abundant number, since it is smaller than the sum of its proper divisors (31671092).

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

28460140 is a wasteful number, since it uses less digits than its factorization.

28460140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8697 (or 8695 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 28460140 is about 5334.8045887361. The cubic root of 28460140 is about 305.3132676673.

The spelling of 28460140 in words is "twenty-eight million, four hundred sixty thousand, one hundred forty".