13154728 has 8 divisors (see below), whose sum is σ = 24665130. Its totient is φ = 6577360.

The previous prime is 13154723. The next prime is 13154731. The reversal of 13154728 is 82745131.

It can be written as a sum of positive squares in only one way, i.e., 8305924 + 4848804 = 2882^2 + 2202^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 13154728.

It is not an unprimeable number, because it can be changed into a prime (13154723) 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 as a sum of consecutive naturals, namely, 822163 + ... + 822178.

Almost surely, 2^13154728 is an apocalyptic number.

It is an amenable number.

13154728 is a deficient number, since it is larger than the sum of its proper divisors (11510402).

13154728 is a wasteful number, since it uses less digits than its factorization.

13154728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644347 (or 1644343 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 13154728 is about 3626.9447197331. The cubic root of 13154728 is about 236.0626569246.

Adding to 13154728 its reverse (82745131), we get a palindrome (95899859).

The spelling of 13154728 in words is "thirteen million, one hundred fifty-four thousand, seven hundred twenty-eight".