28234565 has 8 divisors (see below), whose sum is σ = 34071840. Its totient is φ = 22460752.

The previous prime is 28234559. The next prime is 28234567. The reversal of 28234565 is 56543282.

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 28234565 - 2¹⁸ = 27972421 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28234567) 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, 14879 + ... + 16668.

It is an arithmetic number, because the mean of its divisors is an integer number (4258980).

Almost surely, 2^28234565 is an apocalyptic number.

It is an amenable number.

28234565 is a deficient number, since it is larger than the sum of its proper divisors (5837275).

28234565 is a wasteful number, since it uses less digits than its factorization.

28234565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31731.

The product of its digits is 57600, while the sum is 35.

The square root of 28234565 is about 5313.6207053195. The cubic root of 28234565 is about 304.5044896938.

The spelling of 28234565 in words is "twenty-eight million, two hundred thirty-four thousand, five hundred sixty-five".