43901616 has 160 divisors (see below), whose sum is σ = 134777088. Its totient is φ = 12165120.

The previous prime is 43901591. The next prime is 43901617. The reversal of 43901616 is 61610934.

43901616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×43901616² = 3854703774822912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43901617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 601356 + ... + 601428.

Almost surely, 2^43901616 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 43901616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67388544).

43901616 is an abundant number, since it is smaller than the sum of its proper divisors (90875472).

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

43901616 is a wasteful number, since it uses less digits than its factorization.

43901616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 43901616 is about 6625.8294575095. The cubic root of 43901616 is about 352.7715085408.

It can be divided in two parts, 4390 and 1616, that added together give a palindrome (6006).

The spelling of 43901616 in words is "forty-three million, nine hundred one thousand, six hundred sixteen".