43220352 has 96 divisors (see below), whose sum is σ = 133605720. Its totient is φ = 12343296.

The previous prime is 43220351. The next prime is 43220363. The reversal of 43220352 is 25302234.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43220351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17668 + ... + 19964.

Almost surely, 2^43220352 is an apocalyptic number.

43220352 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43220352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66802860).

43220352 is an abundant number, since it is smaller than the sum of its proper divisors (90385368).

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

43220352 is a wasteful number, since it uses less digits than its factorization.

43220352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328 (or 2309 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 43220352 is about 6574.2187368538. The cubic root of 43220352 is about 350.9372214247.

Adding to 43220352 its reverse (25302234), we get a palindrome (68522586).

The spelling of 43220352 in words is "forty-three million, two hundred twenty thousand, three hundred fifty-two".