13072436 has 12 divisors (see below), whose sum is σ = 24636612. Its totient is φ = 6033408.

The previous prime is 13072429. The next prime is 13072447. The reversal of 13072436 is 63427031.

13072436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3400336 + 9672100 = 1844^2 + 3110^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125645 + ... + 125748.

It is an arithmetic number, because the mean of its divisors is an integer number (2053051).

Almost surely, 2^13072436 is an apocalyptic number.

It is an amenable number.

13072436 is a deficient number, since it is larger than the sum of its proper divisors (11564176).

13072436 is a wasteful number, since it uses less digits than its factorization.

13072436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251410 (or 251408 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 13072436 is about 3615.5823873893. The cubic root of 13072436 is about 235.5693813661.

Adding to 13072436 its reverse (63427031), we get a palindrome (76499467).

The spelling of 13072436 in words is "thirteen million, seventy-two thousand, four hundred thirty-six".