12958155 has 48 divisors (see below), whose sum is σ = 26517504. Its totient is φ = 5728320.

The previous prime is 12958123. The next prime is 12958159. The reversal of 12958155 is 55185921.

It is a happy number.

12958155 is a `hidden beast` number, since 1 + 29 + 581 + 55 = 666.

It is not a de Polignac number, because 12958155 - 2⁵ = 12958123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12958159) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9102 + ... + 10428.

It is an arithmetic number, because the mean of its divisors is an integer number (552448).

Almost surely, 2^12958155 is an apocalyptic number.

12958155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12958155 is an abundant number, since it is smaller than the sum of its proper divisors (13559349).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12958155 is a wasteful number, since it uses less digits than its factorization.

12958155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376 (or 1373 counting only the distinct ones).

The product of its digits is 18000, while the sum is 36.

The square root of 12958155 is about 3599.7437408793. The cubic root of 12958155 is about 234.8809114430.

The spelling of 12958155 in words is "twelve million, nine hundred fifty-eight thousand, one hundred fifty-five".