43381400 has 48 divisors (see below), whose sum is σ = 104130240. Its totient is φ = 16790400.

The previous prime is 43381391. The next prime is 43381411. The reversal of 43381400 is 418334.

43381400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2702 + ... + 9698.

It is an arithmetic number, because the mean of its divisors is an integer number (2169380).

Almost surely, 2^43381400 is an apocalyptic number.

43381400 is a gapful number since it is divisible by the number (40) 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 43381400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52065120).

43381400 is an abundant number, since it is smaller than the sum of its proper divisors (60748840).

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

43381400 is a wasteful number, since it uses less digits than its factorization.

43381400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7044 (or 7035 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 43381400 is about 6586.4557995936. The cubic root of 43381400 is about 351.3725694420.

Adding to 43381400 its reverse (418334), we get a palindrome (43799734).

The spelling of 43381400 in words is "forty-three million, three hundred eighty-one thousand, four hundred".