28573522 has 4 divisors (see below), whose sum is σ = 42860286. Its totient is φ = 14286760.

The previous prime is 28573513. The next prime is 28573547. The reversal of 28573522 is 22537582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23242041 + 5331481 = 4821^2 + 2309^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7143379 + ... + 7143382.

Almost surely, 2^28573522 is an apocalyptic number.

28573522 is a deficient number, since it is larger than the sum of its proper divisors (14286764).

28573522 is a wasteful number, since it uses less digits than its factorization.

28573522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14286763.

The product of its digits is 33600, while the sum is 34.

The square root of 28573522 is about 5345.4206569736. The cubic root of 28573522 is about 305.7181750251.

The spelling of 28573522 in words is "twenty-eight million, five hundred seventy-three thousand, five hundred twenty-two".