28017290 has 16 divisors (see below), whose sum is σ = 57635712. Its totient is φ = 9605904.

The previous prime is 28017287. The next prime is 28017293. The reversal of 28017290 is 9271082.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28017287) and next prime (28017293).

It is not an unprimeable number, because it can be changed into a prime (28017293) by changing a digit.

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, 200054 + ... + 200193.

It is an arithmetic number, because the mean of its divisors is an integer number (3602232).

Almost surely, 2^28017290 is an apocalyptic number.

28017290 is an abundant number, since it is smaller than the sum of its proper divisors (29618422).

28017290 is a wasteful number, since it uses less digits than its factorization.

28017290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400261.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 28017290 is about 5293.1361214312. The cubic root of 28017290 is about 303.7213874498.

The spelling of 28017290 in words is "twenty-eight million, seventeen thousand, two hundred ninety".