22155146 has 8 divisors (see below), whose sum is σ = 35789124. Its totient is φ = 10225440.

The previous prime is 22155143. The next prime is 22155157. The reversal of 22155146 is 64155122.

It can be written as a sum of positive squares in 2 ways, for example, as 21576025 + 579121 = 4645^2 + 761^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 852121 = 22155146 / (2 + 2 + 1 + 5 + 5 + 1 + 4 + 6).

It is not an unprimeable number, because it can be changed into a prime (22155143) 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 3 ways as a sum of consecutive naturals, for example, 426035 + ... + 426086.

Almost surely, 2^22155146 is an apocalyptic number.

22155146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22155146 is a deficient number, since it is larger than the sum of its proper divisors (13633978).

22155146 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 11 representation: 22155146 = (11562542)₁₁.

22155146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852136.

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

The square root of 22155146 is about 4706.9253233932. The cubic root of 22155146 is about 280.8610652954.

The spelling of 22155146 in words is "twenty-two million, one hundred fifty-five thousand, one hundred forty-six".