28346111 has 4 divisors (see below), whose sum is σ = 28745424. Its totient is φ = 27946800.

The previous prime is 28346099. The next prime is 28346113. The reversal of 28346111 is 11164382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28346111 - 2²² = 24151807 is a prime.

It is a super-4 number, since 4×28346111⁴ (a number of 31 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28346113) 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, 199550 + ... + 199691.

It is an arithmetic number, because the mean of its divisors is an integer number (7186356).

Almost surely, 2^28346111 is an apocalyptic number.

28346111 is a deficient number, since it is larger than the sum of its proper divisors (399313).

28346111 is an equidigital number, since it uses as much as digits as its factorization.

28346111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399312.

The product of its digits is 1152, while the sum is 26.

The square root of 28346111 is about 5324.1065917203. The cubic root of 28346111 is about 304.9049636717.

The spelling of 28346111 in words is "twenty-eight million, three hundred forty-six thousand, one hundred eleven".