43472020 has 12 divisors (see below), whose sum is σ = 91291284. Its totient is φ = 17388800.

The previous prime is 43472017. The next prime is 43472021. The reversal of 43472020 is 2027434.

It can be written as a sum of positive squares in 2 ways, for example, as 6091024 + 37380996 = 2468^2 + 6114^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43471982 and 43472000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43472021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1086781 + ... + 1086820.

It is an arithmetic number, because the mean of its divisors is an integer number (7607607).

Almost surely, 2^43472020 is an apocalyptic number.

It is an amenable number.

43472020 is an abundant number, since it is smaller than the sum of its proper divisors (47819264).

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

43472020 is a wasteful number, since it uses less digits than its factorization.

43472020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173610 (or 2173608 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 43472020 is about 6593.3314796088. The cubic root of 43472020 is about 351.6170616025.

Adding to 43472020 its reverse (2027434), we get a palindrome (45499454).

The spelling of 43472020 in words is "forty-three million, four hundred seventy-two thousand, twenty".