43402000 has 40 divisors (see below), whose sum is σ = 104950872. Its totient is φ = 17360000.

The previous prime is 43401983. The next prime is 43402001. The reversal of 43402000 is 20434.

It can be written as a sum of positive squares in 4 ways, for example, as 256 + 43401744 = 16^2 + 6588^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (43402001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8851 + ... + 12850.

Almost surely, 2^43402000 is an apocalyptic number.

43402000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43402000 is an abundant number, since it is smaller than the sum of its proper divisors (61548872).

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

43402000 is a wasteful number, since it uses less digits than its factorization.

43402000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21724 (or 21708 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 43402000 is about 6588.0194292367. The cubic root of 43402000 is about 351.4281779863.

Adding to 43402000 its reverse (20434), we get a palindrome (43422434).

The spelling of 43402000 in words is "forty-three million, four hundred two thousand".