13553748 has 36 divisors (see below), whose sum is σ = 36897588. Its totient is φ = 4170240.

The previous prime is 13553747. The next prime is 13553753. The reversal of 13553748 is 84735531.

It can be written as a sum of positive squares in 2 ways, for example, as 7851204 + 5702544 = 2802^2 + 2388^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13553747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14013 + ... + 14948.

It is an arithmetic number, because the mean of its divisors is an integer number (1024933).

Almost surely, 2^13553748 is an apocalyptic number.

13553748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13553748 is an abundant number, since it is smaller than the sum of its proper divisors (23343840).

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

13553748 is a wasteful number, since it uses less digits than its factorization.

13553748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28984 (or 28979 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 13553748 is about 3681.5415249593. The cubic root of 13553748 is about 238.4257379911.

The spelling of 13553748 in words is "thirteen million, five hundred fifty-three thousand, seven hundred forty-eight".