28562320 has 120 divisors (see below), whose sum is σ = 74834496. Its totient is φ = 10112256.

The previous prime is 28562311. The next prime is 28562353. The reversal of 28562320 is 2326582.

It is a super-2 number, since 2×28562320² = 1631612247564800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 664219 + ... + 664261.

Almost surely, 2^28562320 is an apocalyptic number.

28562320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28562320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37417248).

28562320 is an abundant number, since it is smaller than the sum of its proper divisors (46272176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28562320 is a wasteful number, since it uses less digits than its factorization.

28562320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 28562320 is about 5344.3727414917. The cubic root of 28562320 is about 305.6782184220.

It can be divided in two parts, 28562 and 320, that added together give a palindrome (28882).

The spelling of 28562320 in words is "twenty-eight million, five hundred sixty-two thousand, three hundred twenty".