28558061 has 16 divisors (see below), whose sum is σ = 33323136. Its totient is φ = 23970816.

The previous prime is 28558051. The next prime is 28558073. The reversal of 28558061 is 16085582.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28558061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28558001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92870 + ... + 93176.

It is an arithmetic number, because the mean of its divisors is an integer number (2082696).

Almost surely, 2^28558061 is an apocalyptic number.

It is an amenable number.

28558061 is a deficient number, since it is larger than the sum of its proper divisors (4765075).

28558061 is a wasteful number, since it uses less digits than its factorization.

28558061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 28558061 is about 5343.9742701476. The cubic root of 28558061 is about 305.6630241819.

The spelling of 28558061 in words is "twenty-eight million, five hundred fifty-eight thousand, sixty-one".