43090000 has 100 divisors (see below), whose sum is σ = 108465280. Its totient is φ = 16560000.

The previous prime is 43089953. The next prime is 43090013. The reversal of 43090000 is 9034.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 309931 + ... + 310069.

Almost surely, 2^43090000 is an apocalyptic number.

43090000 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 43090000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54232640).

43090000 is an abundant number, since it is smaller than the sum of its proper divisors (65375280).

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

43090000 is a wasteful number, since it uses less digits than its factorization.

43090000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 43090000 is about 6564.2973729105. The cubic root of 43090000 is about 350.5840588294.

Adding to 43090000 its reverse (9034), we get a palindrome (43099034).

The spelling of 43090000 in words is "forty-three million, ninety thousand".