28837290 has 16 divisors (see below), whose sum is σ = 69209568. Its totient is φ = 7689936.

The previous prime is 28837279. The next prime is 28837313. The reversal of 28837290 is 9273882.

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 7 ways as a sum of consecutive naturals, for example, 480592 + ... + 480651.

It is an arithmetic number, because the mean of its divisors is an integer number (4325598).

Almost surely, 2^28837290 is an apocalyptic number.

28837290 is an abundant number, since it is smaller than the sum of its proper divisors (40372278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28837290 is a wasteful number, since it uses less digits than its factorization.

28837290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961253.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 28837290 is about 5370.0363127264. The cubic root of 28837290 is about 306.6560107093.

The spelling of 28837290 in words is "twenty-eight million, eight hundred thirty-seven thousand, two hundred ninety".