43243776 has 81 divisors (see below), whose sum is σ = 125599201. Its totient is φ = 14309376.

The previous prime is 43243769. The next prime is 43243777. The reversal of 43243776 is 67734234.

It is a happy number.

The square root of 43243776 is 6576.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 25401600 + 17842176 = 5040^2 + 4224^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43243776.

It is not an unprimeable number, because it can be changed into a prime (43243777) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 315580 + ... + 315716.

Almost surely, 2^43243776 is an apocalyptic number.

43243776 is the 6576-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43243776

43243776 is an abundant number, since it is smaller than the sum of its proper divisors (82355425).

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

43243776 is an equidigital number, since it uses as much as digits as its factorization.

43243776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 142 counting only the distinct ones).

The product of its digits is 84672, while the sum is 36.

The cubic root of 43243776 is about 351.0006087602. Note that the first 3 decimals are identical.

Multiplying 43243776 by its sum of digits (36), we get a square (1556775936 = 39456²).

43243776 divided by its sum of digits (36) gives a square (1201216 = 1096²).

It can be divided in two parts, 4324 and 3776, that added together give a square (8100 = 90²).

The spelling of 43243776 in words is "forty-three million, two hundred forty-three thousand, seven hundred seventy-six".