43280039040 has 256 divisors, whose sum is σ = 157840773120. Its totient is φ = 9881432064.

The previous prime is 43280039017. The next prime is 43280039041. The reversal of 43280039040 is 4093008234.

It is a junction number, because it is equal to n+sod(n) for n = 43280038992 and 43280039010.

It is not an unprimeable number, because it can be changed into a prime (43280039041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20736877 + ... + 20738963.

It is an arithmetic number, because the mean of its divisors is an integer number (616565520).

Almost surely, 2^43280039040 is an apocalyptic number.

43280039040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43280039040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78920386560).

43280039040 is an abundant number, since it is smaller than the sum of its proper divisors (114560734080).

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

43280039040 is a wasteful number, since it uses less digits than its factorization.

43280039040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659 (or 3647 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 43280039040 in words is "forty-three billion, two hundred eighty million, thirty-nine thousand, forty".