28055573 has 8 divisors (see below), whose sum is σ = 34530048. Its totient is φ = 22197744.

The previous prime is 28055551. The next prime is 28055581. The reversal of 28055573 is 37555082.

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 28055573 - 2⁸ = 28055317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28055273) 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, 154061 + ... + 154242.

It is an arithmetic number, because the mean of its divisors is an integer number (4316256).

Almost surely, 2^28055573 is an apocalyptic number.

It is an amenable number.

28055573 is a deficient number, since it is larger than the sum of its proper divisors (6474475).

28055573 is a wasteful number, since it uses less digits than its factorization.

28055573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308323.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 28055573 is about 5296.7511740689. The cubic root of 28055573 is about 303.8596600901.

The spelling of 28055573 in words is "twenty-eight million, fifty-five thousand, five hundred seventy-three".