43275438 has 96 divisors (see below), whose sum is σ = 106099200. Its totient is φ = 13062528.

The previous prime is 43275437. The next prime is 43275439. The reversal of 43275438 is 83457234.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (43275437) and next prime (43275439).

Its product of digits (80640) is a multiple of the sum of its prime divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43275437) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 733453 + ... + 733511.

It is an arithmetic number, because the mean of its divisors is an integer number (1105200).

Almost surely, 2^43275438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43275438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53049600).

43275438 is an abundant number, since it is smaller than the sum of its proper divisors (62823762).

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

43275438 is a wasteful number, since it uses less digits than its factorization.

43275438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 128 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 43275438 is about 6578.4069500146. The cubic root of 43275438 is about 351.0862524535.

The spelling of 43275438 in words is "forty-three million, two hundred seventy-five thousand, four hundred thirty-eight".