28158382 has 16 divisors (see below), whose sum is σ = 48457440. Its totient is φ = 12021408.

The previous prime is 28158373. The next prime is 28158397. The reversal of 28158382 is 28385182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28 + ... + 7504.

It is an arithmetic number, because the mean of its divisors is an integer number (3028590).

Almost surely, 2^28158382 is an apocalyptic number.

28158382 is a deficient number, since it is larger than the sum of its proper divisors (20299058).

28158382 is a wasteful number, since it uses less digits than its factorization.

28158382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7755.

The product of its digits is 30720, while the sum is 37.

The square root of 28158382 is about 5306.4472107051. The cubic root of 28158382 is about 304.2303698771.

The spelling of 28158382 in words is "twenty-eight million, one hundred fifty-eight thousand, three hundred eighty-two".