22073391 has 16 divisors (see below), whose sum is σ = 33108320. Its totient is φ = 14714136.

The previous prime is 22073377. The next prime is 22073407. The reversal of 22073391 is 19337022.

It is a de Polignac number, because none of the positive numbers 2^k-22073391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22073371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2860 + ... + 7233.

It is an arithmetic number, because the mean of its divisors is an integer number (2069270).

Almost surely, 2^22073391 is an apocalyptic number.

22073391 is a deficient number, since it is larger than the sum of its proper divisors (11034929).

22073391 is an frugal number, since it uses more digits than its factorization.

22073391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10114 (or 10096 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 22073391 is about 4698.2327528551. The cubic root of 22073391 is about 280.5151697592.

The spelling of 22073391 in words is "twenty-two million, seventy-three thousand, three hundred ninety-one".