28970450 has 12 divisors (see below), whose sum is σ = 53885130. Its totient is φ = 11588160.

The previous prime is 28970441. The next prime is 28970453. The reversal of 28970450 is 5407982.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 22972849 + 5997601 = 4793^2 + 2449^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28970450.

It is not an unprimeable number, because it can be changed into a prime (28970453) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 289655 + ... + 289754.

Almost surely, 2^28970450 is an apocalyptic number.

28970450 is a deficient number, since it is larger than the sum of its proper divisors (24914680).

28970450 is a wasteful number, since it uses less digits than its factorization.

28970450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579421 (or 579416 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 28970450 is about 5382.4204592358. The cubic root of 28970450 is about 307.1272942744.

The spelling of 28970450 in words is "twenty-eight million, nine hundred seventy thousand, four hundred fifty".