13020436 has 72 divisors (see below), whose sum is σ = 28776384. Its totient is φ = 5091840.

The previous prime is 13020431. The next prime is 13020439. The reversal of 13020436 is 63402031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020431) 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 23 ways as a sum of consecutive naturals, for example, 126361 + ... + 126463.

It is an arithmetic number, because the mean of its divisors is an integer number (399672).

Almost surely, 2^13020436 is an apocalyptic number.

It is an amenable number.

13020436 is an abundant number, since it is smaller than the sum of its proper divisors (15755948).

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

13020436 is a wasteful number, since it uses less digits than its factorization.

13020436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 13020436 is about 3608.3841258935. The cubic root of 13020436 is about 235.2566142040.

Adding to 13020436 its reverse (63402031), we get a palindrome (76422467).

It can be divided in two parts, 13020 and 436, that added together give a square (13456 = 116²).

The spelling of 13020436 in words is "thirteen million, twenty thousand, four hundred thirty-six".