43312276 has 36 divisors (see below), whose sum is σ = 88870068. Its totient is φ = 18415488.

The previous prime is 43312271. The next prime is 43312307. The reversal of 43312276 is 67221334.

It can be written as a sum of positive squares in 2 ways, for example, as 26255376 + 17056900 = 5124^2 + 4130^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43312271) 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 11 ways as a sum of consecutive naturals, for example, 26046 + ... + 27658.

It is an arithmetic number, because the mean of its divisors is an integer number (2468613).

Almost surely, 2^43312276 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 43312276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44435034).

43312276 is an abundant number, since it is smaller than the sum of its proper divisors (45557792).

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

43312276 is a wasteful number, since it uses less digits than its factorization.

43312276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768 (or 1759 counting only the distinct ones).

The product of its digits is 6048, while the sum is 28.

The square root of 43312276 is about 6581.2062724093. The cubic root of 43312276 is about 351.1858443382.

The spelling of 43312276 in words is "forty-three million, three hundred twelve thousand, two hundred seventy-six".