28453090 has 8 divisors (see below), whose sum is σ = 51215580. Its totient is φ = 11381232.

The previous prime is 28453063. The next prime is 28453123. The reversal of 28453090 is 9035482.

It can be written as a sum of positive squares in 2 ways, for example, as 26347689 + 2105401 = 5133^2 + 1451^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1422645 + ... + 1422664.

Almost surely, 2^28453090 is an apocalyptic number.

28453090 is a deficient number, since it is larger than the sum of its proper divisors (22762490).

28453090 is a wasteful number, since it uses less digits than its factorization.

28453090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2845316.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 28453090 is about 5334.1437925875. The cubic root of 28453090 is about 305.2880553728.

The spelling of 28453090 in words is "twenty-eight million, four hundred fifty-three thousand, ninety".