28522302 has 16 divisors (see below), whose sum is σ = 57896832. Its totient is φ = 9365400.

The previous prime is 28522297. The next prime is 28522303. The reversal of 28522302 is 20322582.

It is a super-2 number, since 2×28522302² = 1627043422758408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28522303) 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, 35074 + ... + 35877.

It is an arithmetic number, because the mean of its divisors is an integer number (3618552).

Almost surely, 2^28522302 is an apocalyptic number.

28522302 is an abundant number, since it is smaller than the sum of its proper divisors (29374530).

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

28522302 is a wasteful number, since it uses less digits than its factorization.

28522302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71023.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 28522302 is about 5340.6274912224. The cubic root of 28522302 is about 305.5353921583.

Adding to 28522302 its reverse (20322582), we get a palindrome (48844884).

The spelling of 28522302 in words is "twenty-eight million, five hundred twenty-two thousand, three hundred two".