43040430 has 64 divisors (see below), whose sum is σ = 121538880. Its totient is φ = 10801152.

The previous prime is 43040423. The next prime is 43040449. The reversal of 43040430 is 3404034.

It is a super-2 number, since 2×43040430² = 3704957229169800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99 + ... + 9278.

It is an arithmetic number, because the mean of its divisors is an integer number (1899045).

Almost surely, 2^43040430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43040430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60769440).

43040430 is an abundant number, since it is smaller than the sum of its proper divisors (78498450).

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

43040430 is a wasteful number, since it uses less digits than its factorization.

43040430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9410 (or 9404 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 43040430 is about 6560.5205586142. The cubic root of 43040430 is about 350.4495719414.

Adding to 43040430 its reverse (3404034), we get a palindrome (46444464).

The spelling of 43040430 in words is "forty-three million, forty thousand, four hundred thirty".