43215072 has 48 divisors (see below), whose sum is σ = 114588432. Its totient is φ = 14259200.

The previous prime is 43215041. The next prime is 43215079. The reversal of 43215072 is 27051234.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43215079) 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, 7468 + ... + 11924.

It is an arithmetic number, because the mean of its divisors is an integer number (2387259).

Almost surely, 2^43215072 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 43215072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57294216).

43215072 is an abundant number, since it is smaller than the sum of its proper divisors (71373360).

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

43215072 is a wasteful number, since it uses less digits than its factorization.

43215072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4571 (or 4563 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 43215072 is about 6573.8171559605. The cubic root of 43215072 is about 350.9229301328.

The spelling of 43215072 in words is "forty-three million, two hundred fifteen thousand, seventy-two".