28573111 has 8 divisors (see below), whose sum is σ = 32689440. Its totient is φ = 24465408.

The previous prime is 28573099. The next prime is 28573123. The reversal of 28573111 is 11137582.

It is an interprime number because it is at equal distance from previous prime (28573099) and next prime (28573123).

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 28573111 - 2⁵ = 28573079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28573111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28573211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8415 + ... + 11311.

It is an arithmetic number, because the mean of its divisors is an integer number (4086180).

Almost surely, 2^28573111 is an apocalyptic number.

28573111 is a deficient number, since it is larger than the sum of its proper divisors (4116329).

28573111 is a wasteful number, since it uses less digits than its factorization.

28573111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4313.

The product of its digits is 1680, while the sum is 28.

The square root of 28573111 is about 5345.3822127141. The cubic root of 28573111 is about 305.7167092068.

The spelling of 28573111 in words is "twenty-eight million, five hundred seventy-three thousand, one hundred eleven".