28314140 has 12 divisors (see below), whose sum is σ = 59459736. Its totient is φ = 11325648.

The previous prime is 28314119. The next prime is 28314151. The reversal of 28314140 is 4141382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707834 + ... + 707873.

It is an arithmetic number, because the mean of its divisors is an integer number (4954978).

Almost surely, 2^28314140 is an apocalyptic number.

28314140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28314140 is an abundant number, since it is smaller than the sum of its proper divisors (31145596).

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

28314140 is a wasteful number, since it uses less digits than its factorization.

28314140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415716 (or 1415714 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 28314140 is about 5321.1032690599. The cubic root of 28314140 is about 304.7902885193.

The spelling of 28314140 in words is "twenty-eight million, three hundred fourteen thousand, one hundred forty".