12155862 has 16 divisors (see below), whose sum is σ = 24528240. Its totient is φ = 4015872.

The previous prime is 12155851. The next prime is 12155863. The reversal of 12155862 is 26855121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8287 + ... + 9642.

It is an arithmetic number, because the mean of its divisors is an integer number (1533015).

Almost surely, 2^12155862 is an apocalyptic number.

12155862 is an abundant number, since it is smaller than the sum of its proper divisors (12372378).

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

12155862 is a wasteful number, since it uses less digits than its factorization.

12155862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18047.

The product of its digits is 4800, while the sum is 30.

The square root of 12155862 is about 3486.5257779056. The cubic root of 12155862 is about 229.9297958387.

The spelling of 12155862 in words is "twelve million, one hundred fifty-five thousand, eight hundred sixty-two".