28318157 has 8 divisors (see below), whose sum is σ = 32476416. Its totient is φ = 24188112.

The previous prime is 28318133. The next prime is 28318163. The reversal of 28318157 is 75181382.

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

It is a cyclic number.

It is not a de Polignac number, because 28318157 - 2⁶ = 28318093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28318117) 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, 4853 + ... + 8954.

It is an arithmetic number, because the mean of its divisors is an integer number (4059552).

Almost surely, 2^28318157 is an apocalyptic number.

It is an amenable number.

28318157 is a deficient number, since it is larger than the sum of its proper divisors (4158259).

28318157 is a wasteful number, since it uses less digits than its factorization.

28318157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14107.

The product of its digits is 13440, while the sum is 35.

The square root of 28318157 is about 5321.4807149890. The cubic root of 28318157 is about 304.8047016322.

The spelling of 28318157 in words is "twenty-eight million, three hundred eighteen thousand, one hundred fifty-seven".