28901450 has 12 divisors (see below), whose sum is σ = 53756790. Its totient is φ = 11560560.

The previous prime is 28901419. The next prime is 28901497. The reversal of 28901450 is 5410982.

It can be written as a sum of positive squares in 3 ways, for example, as 15673681 + 13227769 = 3959^2 + 3637^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 288965 + ... + 289064.

Almost surely, 2^28901450 is an apocalyptic number.

28901450 is a deficient number, since it is larger than the sum of its proper divisors (24855340).

28901450 is a wasteful number, since it uses less digits than its factorization.

28901450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578041 (or 578036 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 28901450 is about 5376.0068824361. The cubic root of 28901450 is about 306.8832682637.

The spelling of 28901450 in words is "twenty-eight million, nine hundred one thousand, four hundred fifty".