13542444 has 48 divisors (see below), whose sum is σ = 36069600. Its totient is φ = 4390848.

The previous prime is 13542437. The next prime is 13542467. The reversal of 13542444 is 44424531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2302 + ... + 5690.

It is an arithmetic number, because the mean of its divisors is an integer number (751450).

Almost surely, 2^13542444 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 13542444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18034800).

13542444 is an abundant number, since it is smaller than the sum of its proper divisors (22527156).

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

13542444 is a wasteful number, since it uses less digits than its factorization.

13542444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3439 (or 3431 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 13542444 is about 3680.0059782560. The cubic root of 13542444 is about 238.3594361791.

Adding to 13542444 its reverse (44424531), we get a palindrome (57966975).

The spelling of 13542444 in words is "thirteen million, five hundred forty-two thousand, four hundred forty-four".