43270440 has 64 divisors (see below), whose sum is σ = 137453760. Its totient is φ = 10859520.

The previous prime is 43270421. The next prime is 43270471. The reversal of 43270440 is 4407234.

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

It is a self number, because there is not a number n which added to its sum of digits gives 43270440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8566 + ... + 12645.

It is an arithmetic number, because the mean of its divisors is an integer number (2147715).

Almost surely, 2^43270440 is an apocalyptic number.

43270440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43270440 is an abundant number, since it is smaller than the sum of its proper divisors (94183320).

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

43270440 is a wasteful number, since it uses less digits than its factorization.

43270440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21242 (or 21238 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 43270440 is about 6578.0270598410. The cubic root of 43270440 is about 351.0727359591.

Adding to 43270440 its reverse (4407234), we get a palindrome (47677674).

The spelling of 43270440 in words is "forty-three million, two hundred seventy thousand, four hundred forty".