43236990 has 72 divisors (see below), whose sum is σ = 116911080. Its totient is φ = 11512368.

The previous prime is 43236953. The next prime is 43236997. The reversal of 43236990 is 9963234.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43236997) 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 35 ways as a sum of consecutive naturals, for example, 65281 + ... + 65939.

It is an arithmetic number, because the mean of its divisors is an integer number (1623765).

Almost surely, 2^43236990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43236990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58455540).

43236990 is an abundant number, since it is smaller than the sum of its proper divisors (73674090).

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

43236990 is an frugal number, since it uses more digits than its factorization.

43236990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 43236990 is about 6575.4840126032. The cubic root of 43236990 is about 350.9822476229.

The spelling of 43236990 in words is "forty-three million, two hundred thirty-six thousand, nine hundred ninety".