12013536 has 24 divisors (see below), whose sum is σ = 31535784. Its totient is φ = 4004480.

The previous prime is 12013531. The next prime is 12013541. The reversal of 12013536 is 63531021.

It is an interprime number because it is at equal distance from previous prime (12013531) and next prime (12013541).

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62475 + ... + 62666.

It is an arithmetic number, because the mean of its divisors is an integer number (1313991).

Almost surely, 2^12013536 is an apocalyptic number.

12013536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12013536 is an abundant number, since it is smaller than the sum of its proper divisors (19522248).

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

12013536 is a wasteful number, since it uses less digits than its factorization.

12013536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125154 (or 125146 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 12013536 is about 3466.0548178008. The cubic root of 12013536 is about 229.0288986750.

Adding to 12013536 its reverse (63531021), we get a palindrome (75544557).

The spelling of 12013536 in words is "twelve million, thirteen thousand, five hundred thirty-six".