28060511 has 4 divisors (see below), whose sum is σ = 29537400. Its totient is φ = 26583624.

The previous prime is 28060447. The next prime is 28060531. The reversal of 28060511 is 11506082.

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 28060511 - 2⁶ = 28060447 is a prime.

It is a super-2 number, since 2×28060511² = 1574784555162242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28060531) 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, 738416 + ... + 738453.

It is an arithmetic number, because the mean of its divisors is an integer number (7384350).

Almost surely, 2^28060511 is an apocalyptic number.

28060511 is a deficient number, since it is larger than the sum of its proper divisors (1476889).

28060511 is a wasteful number, since it uses less digits than its factorization.

28060511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476888.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 28060511 is about 5297.2172883506. The cubic root of 28060511 is about 303.8774862689.

Adding to 28060511 its reverse (11506082), we get a palindrome (39566593).

The spelling of 28060511 in words is "twenty-eight million, sixty thousand, five hundred eleven".