22013028 has 36 divisors (see below), whose sum is σ = 58918860. Its totient is φ = 6905856.

The previous prime is 22013021. The next prime is 22013029. The reversal of 22013028 is 82031022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19027044 + 2985984 = 4362^2 + 1728^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 22013028.

It is not an unprimeable number, because it can be changed into a prime (22013021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17373 + ... + 18596.

It is an arithmetic number, because the mean of its divisors is an integer number (1636635).

Almost surely, 2^22013028 is an apocalyptic number.

It is an amenable number.

22013028 is an abundant number, since it is smaller than the sum of its proper divisors (36905832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22013028 is a wasteful number, since it uses less digits than its factorization.

22013028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35996 (or 35991 counting only the distinct ones).

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

The square root of 22013028 is about 4691.8043437467. The cubic root of 22013028 is about 280.2592327093.

The spelling of 22013028 in words is "twenty-two million, thirteen thousand, twenty-eight".