28555773 has 8 divisors (see below), whose sum is σ = 38365536. Its totient is φ = 18891600.

The previous prime is 28555771. The next prime is 28555777. The reversal of 28555773 is 37755582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28555773 - 2¹ = 28555771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28555771) 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, 35938 + ... + 36723.

It is an arithmetic number, because the mean of its divisors is an integer number (4795692).

Almost surely, 2^28555773 is an apocalyptic number.

It is an amenable number.

28555773 is a deficient number, since it is larger than the sum of its proper divisors (9809763).

28555773 is a wasteful number, since it uses less digits than its factorization.

28555773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72795.

The product of its digits is 294000, while the sum is 42.

The square root of 28555773 is about 5343.7601929727. The cubic root of 28555773 is about 305.6548609797.

The spelling of 28555773 in words is "twenty-eight million, five hundred fifty-five thousand, seven hundred seventy-three".