13557996 has 48 divisors (see below), whose sum is σ = 35911680. Its totient is φ = 4421520.

The previous prime is 13557991. The next prime is 13558009. The reversal of 13557996 is 69975531.

13557996 is a `hidden beast` number, since 1 + 3 + 557 + 9 + 96 = 666.

It is not an unprimeable number, because it can be changed into a prime (13557991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3741 + ... + 6411.

It is an arithmetic number, because the mean of its divisors is an integer number (748160).

Almost surely, 2^13557996 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 13557996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17955840).

13557996 is an abundant number, since it is smaller than the sum of its proper divisors (22353684).

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

13557996 is a wasteful number, since it uses less digits than its factorization.

13557996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731 (or 2723 counting only the distinct ones).

The product of its digits is 255150, while the sum is 45.

The square root of 13557996 is about 3682.1184120014. The cubic root of 13557996 is about 238.4506444288.

It can be divided in two parts, 13 and 557996, that added together give a square (558009 = 747²).

The spelling of 13557996 in words is "thirteen million, five hundred fifty-seven thousand, nine hundred ninety-six".