43420344 has 32 divisors (see below), whose sum is σ = 118419840. Its totient is φ = 13157600.

The previous prime is 43420331. The next prime is 43420379. The reversal of 43420344 is 44302434.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81972 + ... + 82499.

It is an arithmetic number, because the mean of its divisors is an integer number (3700620).

Almost surely, 2^43420344 is an apocalyptic number.

43420344 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

43420344 is an abundant number, since it is smaller than the sum of its proper divisors (74999496).

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

43420344 is a wasteful number, since it uses less digits than its factorization.

43420344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164491 (or 164487 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 43420344 is about 6589.4115063487. The cubic root of 43420344 is about 351.4776817764.

Adding to 43420344 its reverse (44302434), we get a palindrome (87722778).

The spelling of 43420344 in words is "forty-three million, four hundred twenty thousand, three hundred forty-four".