43452416 has 72 divisors (see below), whose sum is σ = 101302110. Its totient is φ = 18579456.

The previous prime is 43452413. The next prime is 43452457. The reversal of 43452416 is 61425434.

It can be written as a sum of positive squares in only one way, i.e., 42198016 + 1254400 = 6496^2 + 1120^2 .

It is a super-2 number, since 2×43452416² = 3776224912474112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43452413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100136 + ... + 100568.

Almost surely, 2^43452416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43452416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50651055).

43452416 is an abundant number, since it is smaller than the sum of its proper divisors (57849694).

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

43452416 is an equidigital number, since it uses as much as digits as its factorization.

43452416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 442 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 43452416 is about 6591.8446583638. The cubic root of 43452416 is about 351.5641989620.

The spelling of 43452416 in words is "forty-three million, four hundred fifty-two thousand, four hundred sixteen".