43216890 has 64 divisors (see below), whose sum is σ = 111041280. Its totient is φ = 10726400.

The previous prime is 43216879. The next prime is 43216891. The reversal of 43216890 is 9861234.

It is not an unprimeable number, because it can be changed into a prime (43216891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51091 + ... + 51929.

It is an arithmetic number, because the mean of its divisors is an integer number (1735020).

Almost surely, 2^43216890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43216890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55520640).

43216890 is an abundant number, since it is smaller than the sum of its proper divisors (67824390).

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

43216890 is a wasteful number, since it uses less digits than its factorization.

43216890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 43216890 is about 6573.9554303326. The cubic root of 43216890 is about 350.9278510158.

It can be divided in two parts, 4321 and 6890, that added together give a palindrome (11211).

The spelling of 43216890 in words is "forty-three million, two hundred sixteen thousand, eight hundred ninety".