12005955 has 32 divisors (see below), whose sum is σ = 22989120. Its totient is φ = 5909760.

The previous prime is 12005953. The next prime is 12005957. The reversal of 12005955 is 55950021.

12005955 = 955² + 956² + ... + 967².

12005955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12005953) and next prime (12005957).

It is not a de Polignac number, because 12005955 - 2¹ = 12005953 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (12005953) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1666 + ... + 5175.

It is an arithmetic number, because the mean of its divisors is an integer number (718410).

Almost surely, 2^12005955 is an apocalyptic number.

12005955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12005955 is a deficient number, since it is larger than the sum of its proper divisors (10983165).

12005955 is a wasteful number, since it uses less digits than its factorization.

12005955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6868 (or 6862 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 12005955 is about 3464.9610387420. The cubic root of 12005955 is about 228.9807132108.

Adding to 12005955 its reverse (55950021), we get a palindrome (67955976).

The spelling of 12005955 in words is "twelve million, five thousand, nine hundred fifty-five".