16222905 has 12 divisors (see below), whose sum is σ = 28119780. Its totient is φ = 8652192.

The previous prime is 16222897. The next prime is 16222907. The reversal of 16222905 is 50922261.

It can be written as a sum of positive squares in 2 ways, for example, as 3606201 + 12616704 = 1899^2 + 3552^2 .

It is not a de Polignac number, because 16222905 - 2³ = 16222897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16222907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180210 + ... + 180299.

It is an arithmetic number, because the mean of its divisors is an integer number (2343315).

Almost surely, 2^16222905 is an apocalyptic number.

16222905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16222905 is a deficient number, since it is larger than the sum of its proper divisors (11896875).

16222905 is a wasteful number, since it uses less digits than its factorization.

16222905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360520 (or 360517 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 16222905 is about 4027.7667509428. The cubic root of 16222905 is about 253.1489954390.

The spelling of 16222905 in words is "sixteen million, two hundred twenty-two thousand, nine hundred five".