28264043 has 4 divisors (see below), whose sum is σ = 28278888. Its totient is φ = 28249200.

The previous prime is 28264031. The next prime is 28264051. The reversal of 28264043 is 34046282.

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 28264043 - 2¹⁰ = 28263019 is a prime.

It is a super-4 number, since 4×28264043⁴ (a number of 31 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28263997 and 28264015.

It is not an unprimeable number, because it can be changed into a prime (28264063) 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, 4058 + ... + 8543.

It is an arithmetic number, because the mean of its divisors is an integer number (7069722).

Almost surely, 2^28264043 is an apocalyptic number.

28264043 is a deficient number, since it is larger than the sum of its proper divisors (14845).

28264043 is a wasteful number, since it uses less digits than its factorization.

28264043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14844.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 28264043 is about 5316.3937965504. The cubic root of 28264043 is about 304.6104244033.

The spelling of 28264043 in words is "twenty-eight million, two hundred sixty-four thousand, forty-three".