28661158 has 8 divisors (see below), whose sum is σ = 45254520. Its totient is φ = 13576320.

The previous prime is 28661153. The next prime is 28661161. The reversal of 28661158 is 85116682.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28661153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377083 + ... + 377158.

It is an arithmetic number, because the mean of its divisors is an integer number (5656815).

Almost surely, 2^28661158 is an apocalyptic number.

28661158 is a deficient number, since it is larger than the sum of its proper divisors (16593362).

28661158 is a wasteful number, since it uses less digits than its factorization.

28661158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754262.

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

The square root of 28661158 is about 5353.6116781104. The cubic root of 28661158 is about 306.0304055110.

The spelling of 28661158 in words is "twenty-eight million, six hundred sixty-one thousand, one hundred fifty-eight".