28646111 has 8 divisors (see below), whose sum is σ = 31241280. Its totient is φ = 26106912.

The previous prime is 28646099. The next prime is 28646119. The reversal of 28646111 is 11164682.

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

It is not a de Polignac number, because 28646111 - 2⁶ = 28646047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28646119) 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, 12920 + ... + 14973.

It is an arithmetic number, because the mean of its divisors is an integer number (3905160).

Almost surely, 2^28646111 is an apocalyptic number.

28646111 is a deficient number, since it is larger than the sum of its proper divisors (2595169).

28646111 is a wasteful number, since it uses less digits than its factorization.

28646111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27985.

The product of its digits is 2304, while the sum is 29.

The square root of 28646111 is about 5352.2061806324. The cubic root of 28646111 is about 305.9768411995.

The spelling of 28646111 in words is "twenty-eight million, six hundred forty-six thousand, one hundred eleven".