43215016 has 32 divisors (see below), whose sum is σ = 87753960. Its totient is φ = 19832832.

The previous prime is 43215013. The next prime is 43215019. The reversal of 43215016 is 61051234.

It is an interprime number because it is at equal distance from previous prime (43215013) and next prime (43215019).

It can be written as a sum of positive squares in 4 ways, for example, as 13468900 + 29746116 = 3670^2 + 5454^2 .

It is not an unprimeable number, because it can be changed into a prime (43215013) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18996 + ... + 21148.

Almost surely, 2^43215016 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 43215016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43876980).

43215016 is an abundant number, since it is smaller than the sum of its proper divisors (44538944).

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

43215016 is a wasteful number, since it uses less digits than its factorization.

43215016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365 (or 2361 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 43215016 is about 6573.8128966377. The cubic root of 43215016 is about 350.9227785523.

The spelling of 43215016 in words is "forty-three million, two hundred fifteen thousand, sixteen".