28022301 has 16 divisors (see below), whose sum is σ = 41630400. Its totient is φ = 18629424.

The previous prime is 28022299. The next prime is 28022329. The reversal of 28022301 is 10322082.

It is a happy number.

It is not a de Polignac number, because 28022301 - 2¹ = 28022299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28022101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10075 + ... + 12551.

It is an arithmetic number, because the mean of its divisors is an integer number (2601900).

Almost surely, 2^28022301 is an apocalyptic number.

It is an amenable number.

28022301 is a deficient number, since it is larger than the sum of its proper divisors (13608099).

28022301 is a wasteful number, since it uses less digits than its factorization.

28022301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905 (or 2899 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 28022301 is about 5293.6094491377. The cubic root of 28022301 is about 303.7394936162.

Adding to 28022301 its reverse (10322082), we get a palindrome (38344383).

The spelling of 28022301 in words is "twenty-eight million, twenty-two thousand, three hundred one".