43820868 has 48 divisors (see below), whose sum is σ = 125847680. Its totient is φ = 11556864.

The previous prime is 43820863. The next prime is 43820869. The reversal of 43820868 is 86802834.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (43820863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18973 + ... + 21156.

Almost surely, 2^43820868 is an apocalyptic number.

It is an amenable number.

43820868 is an abundant number, since it is smaller than the sum of its proper divisors (82026812).

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

43820868 is a wasteful number, since it uses less digits than its factorization.

43820868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40156 (or 40154 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 43820868 is about 6619.7332272532. The cubic root of 43820868 is about 352.5550922392. Note that the first 3 decimals are identical.

The spelling of 43820868 in words is "forty-three million, eight hundred twenty thousand, eight hundred sixty-eight".