22380155 has 8 divisors (see below), whose sum is σ = 30692832. Its totient is φ = 15346368.

The previous prime is 22380133. The next prime is 22380181. The reversal of 22380155 is 55108322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22380155 - 2⁶ = 22380091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319682 + ... + 319751.

It is an arithmetic number, because the mean of its divisors is an integer number (3836604).

Almost surely, 2^22380155 is an apocalyptic number.

22380155 is a deficient number, since it is larger than the sum of its proper divisors (8312677).

22380155 is an equidigital number, since it uses as much as digits as its factorization.

22380155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639445.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 22380155 is about 4730.7668511564. The cubic root of 22380155 is about 281.8086784706.

Adding to 22380155 its reverse (55108322), we get a palindrome (77488477).

The spelling of 22380155 in words is "twenty-two million, three hundred eighty thousand, one hundred fifty-five".