12613972 has 36 divisors (see below), whose sum is σ = 25919040. Its totient is φ = 5355504.

The previous prime is 12613957. The next prime is 12613973. The reversal of 12613972 is 27931621.

It is a super-2 number, since 2×12613972² = 318224579233568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12613973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27013 + ... + 27475.

Almost surely, 2^12613972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12613972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12959520).

12613972 is an abundant number, since it is smaller than the sum of its proper divisors (13305068).

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

12613972 is a wasteful number, since it uses less digits than its factorization.

12613972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620 (or 611 counting only the distinct ones).

The product of its digits is 4536, while the sum is 31.

The square root of 12613972 is about 3551.6154071070. The cubic root of 12613972 is about 232.7826569588.

The spelling of 12613972 in words is "twelve million, six hundred thirteen thousand, nine hundred seventy-two".