28452212 has 6 divisors (see below), whose sum is σ = 49791378. Its totient is φ = 14226104.

The previous prime is 28452209. The next prime is 28452217. The reversal of 28452212 is 21225482.

It can be written as a sum of positive squares in only one way, i.e., 20757136 + 7695076 = 4556^2 + 2774^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28452217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3556523 + ... + 3556530.

It is an arithmetic number, because the mean of its divisors is an integer number (8298563).

Almost surely, 2^28452212 is an apocalyptic number.

It is an amenable number.

28452212 is a deficient number, since it is larger than the sum of its proper divisors (21339166).

28452212 is a wasteful number, since it uses less digits than its factorization.

28452212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7113057 (or 7113055 counting only the distinct ones).

The product of its digits is 2560, while the sum is 26.

The square root of 28452212 is about 5334.0614919590. The cubic root of 28452212 is about 305.2849151670.

Adding to 28452212 its reverse (21225482), we get a palindrome (49677694).

The spelling of 28452212 in words is "twenty-eight million, four hundred fifty-two thousand, two hundred twelve".