28140958 has 8 divisors (see below), whose sum is σ = 42339960. Its totient is φ = 14027640.

The previous prime is 28140949. The next prime is 28140971. The reversal of 28140958 is 85904182.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 20593 + ... + 21916.

It is an arithmetic number, because the mean of its divisors is an integer number (5292495).

Almost surely, 2^28140958 is an apocalyptic number.

28140958 is a deficient number, since it is larger than the sum of its proper divisors (14199002).

28140958 is a wasteful number, since it uses less digits than its factorization.

28140958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42842.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 28140958 is about 5304.8051802116. The cubic root of 28140958 is about 304.1676058102.

The spelling of 28140958 in words is "twenty-eight million, one hundred forty thousand, nine hundred fifty-eight".