28022102 has 4 divisors (see below), whose sum is σ = 42033156. Its totient is φ = 14011050.

The previous prime is 28022101. The next prime is 28022143. The reversal of 28022102 is 20122082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20122082 = 2 ⋅10061041.

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 as a sum of consecutive naturals, namely, 7005524 + ... + 7005527.

It is an arithmetic number, because the mean of its divisors is an integer number (10508289).

Almost surely, 2^28022102 is an apocalyptic number.

28022102 is a deficient number, since it is larger than the sum of its proper divisors (14011054).

28022102 is a wasteful number, since it uses less digits than its factorization.

28022102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14011053.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 28022102 is about 5293.5906528556. The cubic root of 28022102 is about 303.7387746138.

Adding to 28022102 its reverse (20122082), we get a palindrome (48144184).

The spelling of 28022102 in words is "twenty-eight million, twenty-two thousand, one hundred two".