28441690 has 16 divisors (see below), whose sum is σ = 51321600. Its totient is φ = 11348560.

The previous prime is 28441687. The next prime is 28441691. The reversal of 28441690 is 9614482.

It is a super-2 number, since 2×28441690² = 1617859460112200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28441691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1011 + ... + 7609.

It is an arithmetic number, because the mean of its divisors is an integer number (3207600).

Almost surely, 2^28441690 is an apocalyptic number.

28441690 is a deficient number, since it is larger than the sum of its proper divisors (22879910).

28441690 is a wasteful number, since it uses less digits than its factorization.

28441690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7037.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 28441690 is about 5333.0750979149. The cubic root of 28441690 is about 305.2472777427.

The spelling of 28441690 in words is "twenty-eight million, four hundred forty-one thousand, six hundred ninety".