28868145 has 8 divisors (see below), whose sum is σ = 46189056. Its totient is φ = 15396336.

The previous prime is 28868117. The next prime is 28868149. The reversal of 28868145 is 54186882.

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

It is not a de Polignac number, because 28868145 - 2⁹ = 28867633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28868097 and 28868106.

It is not an unprimeable number, because it can be changed into a prime (28868149) 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, 962257 + ... + 962286.

It is an arithmetic number, because the mean of its divisors is an integer number (5773632).

Almost surely, 2^28868145 is an apocalyptic number.

It is an amenable number.

28868145 is a deficient number, since it is larger than the sum of its proper divisors (17320911).

28868145 is a wasteful number, since it uses less digits than its factorization.

28868145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924551.

The product of its digits is 122880, while the sum is 42.

The square root of 28868145 is about 5372.9084302638. The cubic root of 28868145 is about 306.7653425106.

The spelling of 28868145 in words is "twenty-eight million, eight hundred sixty-eight thousand, one hundred forty-five".