28623115 has 8 divisors (see below), whose sum is σ = 34523280. Its totient is φ = 22781472.

The previous prime is 28623071. The next prime is 28623143. The reversal of 28623115 is 51132682.

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 28623115 - 2¹³ = 28614923 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13545 + ... + 15514.

It is an arithmetic number, because the mean of its divisors is an integer number (4315410).

Almost surely, 2^28623115 is an apocalyptic number.

28623115 is a deficient number, since it is larger than the sum of its proper divisors (5900165).

28623115 is a wasteful number, since it uses less digits than its factorization.

28623115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29261.

The product of its digits is 2880, while the sum is 28.

The square root of 28623115 is about 5350.0574763268. The cubic root of 28623115 is about 305.8949437872.

Adding to 28623115 its reverse (51132682), we get a palindrome (79755797).

The spelling of 28623115 in words is "twenty-eight million, six hundred twenty-three thousand, one hundred fifteen".