28140470 has 16 divisors (see below), whose sum is σ = 50727600. Its totient is φ = 11239584.

The previous prime is 28140443. The next prime is 28140479. The reversal of 28140470 is 7404182.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28140479) 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, 6881 + ... + 10179.

It is an arithmetic number, because the mean of its divisors is an integer number (3170475).

Almost surely, 2^28140470 is an apocalyptic number.

28140470 is a deficient number, since it is larger than the sum of its proper divisors (22587130).

28140470 is a wasteful number, since it uses less digits than its factorization.

28140470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4159.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 28140470 is about 5304.7591839781. The cubic root of 28140470 is about 304.1658475823.

The spelling of 28140470 in words is "twenty-eight million, one hundred forty thousand, four hundred seventy".