43149456 has 160 divisors (see below), whose sum is σ = 149196800. Its totient is φ = 11664000.

The previous prime is 43149439. The next prime is 43149467. The reversal of 43149456 is 65494134.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 43149456.

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, 57081 + ... + 57831.

It is an arithmetic number, because the mean of its divisors is an integer number (932480).

Almost surely, 2^43149456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43149456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74598400).

43149456 is an abundant number, since it is smaller than the sum of its proper divisors (106047344).

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

43149456 is a wasteful number, since it uses less digits than its factorization.

43149456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 782 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 43149456 is about 6568.8245523838. The cubic root of 43149456 is about 350.7452311515.

The spelling of 43149456 in words is "forty-three million, one hundred forty-nine thousand, four hundred fifty-six".