28436290 has 16 divisors (see below), whose sum is σ = 51414912. Its totient is φ = 11323504.

The previous prime is 28436263. The next prime is 28436377. The reversal of 28436290 is 9263482.

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 7 ways as a sum of consecutive naturals, for example, 3994 + ... + 8533.

It is an arithmetic number, because the mean of its divisors is an integer number (3213432).

Almost surely, 2^28436290 is an apocalyptic number.

28436290 is a deficient number, since it is larger than the sum of its proper divisors (22978622).

28436290 is a wasteful number, since it uses less digits than its factorization.

28436290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12761.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 28436290 is about 5332.5687993686. The cubic root of 28436290 is about 305.2279582199.

The spelling of 28436290 in words is "twenty-eight million, four hundred thirty-six thousand, two hundred ninety".