43253620 has 12 divisors (see below), whose sum is σ = 90832644. Its totient is φ = 17301440.

The previous prime is 43253611. The next prime is 43253621. The reversal of 43253620 is 2635234.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12362256 + 30891364 = 3516^2 + 5558^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43253621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1081321 + ... + 1081360.

It is an arithmetic number, because the mean of its divisors is an integer number (7569387).

Almost surely, 2^43253620 is an apocalyptic number.

It is an amenable number.

43253620 is an abundant number, since it is smaller than the sum of its proper divisors (47579024).

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

43253620 is a wasteful number, since it uses less digits than its factorization.

43253620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162690 (or 2162688 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 43253620 is about 6576.7484367277. The cubic root of 43253620 is about 351.0272406301.

Adding to 43253620 its reverse (2635234), we get a palindrome (45888854).

It can be divided in two parts, 432536 and 20, that multiplied together give a triangular number (8650720 = T₄₁₅₉).

The spelling of 43253620 in words is "forty-three million, two hundred fifty-three thousand, six hundred twenty".