28022137 has 16 divisors (see below), whose sum is σ = 34860672. Its totient is φ = 22129920.

The previous prime is 28022101. The next prime is 28022143. The reversal of 28022137 is 73122082.

It is not a de Polignac number, because 28022137 - 2⁷ = 28022009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28022167) 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, 3333 + ... + 8194.

It is an arithmetic number, because the mean of its divisors is an integer number (2178792).

Almost surely, 2^28022137 is an apocalyptic number.

It is an amenable number.

28022137 is a deficient number, since it is larger than the sum of its proper divisors (6838535).

28022137 is a wasteful number, since it uses less digits than its factorization.

28022137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11568.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 28022137 is about 5293.5939587392. The cubic root of 28022137 is about 303.7389010718.

The spelling of 28022137 in words is "twenty-eight million, twenty-two thousand, one hundred thirty-seven".