13120632 has 72 divisors (see below), whose sum is σ = 41347800. Its totient is φ = 3747744.

The previous prime is 13120631. The next prime is 13120643. The reversal of 13120632 is 23602131.

13120632 is a `hidden beast` number, since 1 + 31 + 2 + 0 + 632 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120631) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1669 + ... + 5387.

It is an arithmetic number, because the mean of its divisors is an integer number (574275).

Almost surely, 2^13120632 is an apocalyptic number.

13120632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13120632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20673900).

13120632 is an abundant number, since it is smaller than the sum of its proper divisors (28227168).

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

13120632 is a wasteful number, since it uses less digits than its factorization.

13120632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3745 (or 3731 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 13120632 is about 3622.2412951100. The cubic root of 13120632 is about 235.8585286365.

Adding to 13120632 its reverse (23602131), we get a palindrome (36722763).

The spelling of 13120632 in words is "thirteen million, one hundred twenty thousand, six hundred thirty-two".