22019145 has 16 divisors (see below), whose sum is σ = 36367872. Its totient is φ = 11364480.

The previous prime is 22019143. The next prime is 22019147. The reversal of 22019145 is 54191022.

It is an interprime number because it is at equal distance from previous prime (22019143) and next prime (22019147).

It is not a de Polignac number, because 22019145 - 2¹ = 22019143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22019141) 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, 23212 + ... + 24141.

It is an arithmetic number, because the mean of its divisors is an integer number (2272992).

Almost surely, 2^22019145 is an apocalyptic number.

It is an amenable number.

22019145 is a deficient number, since it is larger than the sum of its proper divisors (14348727).

22019145 is a wasteful number, since it uses less digits than its factorization.

22019145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47392.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 22019145 is about 4692.4561798700. The cubic root of 22019145 is about 280.2851898676.

The spelling of 22019145 in words is "twenty-two million, nineteen thousand, one hundred forty-five".