43272020 has 36 divisors (see below), whose sum is σ = 99888852. Its totient is φ = 15734400.

The previous prime is 43272011. The next prime is 43272041. The reversal of 43272020 is 2027234.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15856324 + 27415696 = 3982^2 + 5236^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 43271983 and 43272001.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 6521 + ... + 11360.

Almost surely, 2^43272020 is an apocalyptic number.

It is an amenable number.

43272020 is an abundant number, since it is smaller than the sum of its proper divisors (56616832).

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

43272020 is a wasteful number, since it uses less digits than its factorization.

43272020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17912 (or 17899 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 43272020 is about 6578.1471555446. The cubic root of 43272020 is about 351.0770089930.

Adding to 43272020 its reverse (2027234), we get a palindrome (45299254).

The spelling of 43272020 in words is "forty-three million, two hundred seventy-two thousand, twenty".