28522385 has 8 divisors (see below), whose sum is σ = 34364736. Its totient is φ = 22726000.

The previous prime is 28522381. The next prime is 28522409. The reversal of 28522385 is 58322582.

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

It is not a de Polignac number, because 28522385 - 2² = 28522381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28522381) 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, 10109 + ... + 12618.

It is an arithmetic number, because the mean of its divisors is an integer number (4295592).

Almost surely, 2^28522385 is an apocalyptic number.

It is an amenable number.

28522385 is a deficient number, since it is larger than the sum of its proper divisors (5842351).

28522385 is a wasteful number, since it uses less digits than its factorization.

28522385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22983.

The product of its digits is 38400, while the sum is 35.

The square root of 28522385 is about 5340.6352618392. The cubic root of 28522385 is about 305.5356885277.

The spelling of 28522385 in words is "twenty-eight million, five hundred twenty-two thousand, three hundred eighty-five".