43222528 has 80 divisors (see below), whose sum is σ = 92806560. Its totient is φ = 20070400.

The previous prime is 43222519. The next prime is 43222537. The reversal of 43222528 is 82522234.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (43222519) and next prime (43222537).

It is a junction number, because it is equal to n+sod(n) for n = 43222496 and 43222505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608733 + ... + 608803.

It is an arithmetic number, because the mean of its divisors is an integer number (1160082).

Almost surely, 2^43222528 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 43222528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46403280).

43222528 is an abundant number, since it is smaller than the sum of its proper divisors (49584032).

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

43222528 is an equidigital number, since it uses as much as digits as its factorization.

43222528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 143 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 43222528 is about 6574.3842297207. The cubic root of 43222528 is about 350.9431108305.

The spelling of 43222528 in words is "forty-three million, two hundred twenty-two thousand, five hundred twenty-eight".