28628252 has 12 divisors (see below), whose sum is σ = 51715776. Its totient is φ = 13852320.

The previous prime is 28628233. The next prime is 28628263. The reversal of 28628252 is 25282682.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 115313 + ... + 115560.

It is an arithmetic number, because the mean of its divisors is an integer number (4309648).

Almost surely, 2^28628252 is an apocalyptic number.

It is an amenable number.

28628252 is a deficient number, since it is larger than the sum of its proper divisors (23087524).

28628252 is a wasteful number, since it uses less digits than its factorization.

28628252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230908 (or 230906 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 28628252 is about 5350.5375430885. The cubic root of 28628252 is about 305.9132423818.

The spelling of 28628252 in words is "twenty-eight million, six hundred twenty-eight thousand, two hundred fifty-two".