40817128 has 16 divisors (see below), whose sum is σ = 83489760. Its totient is φ = 18553200.

The previous prime is 40817093. The next prime is 40817141. The reversal of 40817128 is 82171804.

It is a self number, because there is not a number n which added to its sum of digits gives 40817128.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231828 + ... + 232003.

It is an arithmetic number, because the mean of its divisors is an integer number (5218110).

Almost surely, 2^40817128 is an apocalyptic number.

It is an amenable number.

40817128 is an abundant number, since it is smaller than the sum of its proper divisors (42672632).

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

40817128 is a wasteful number, since it uses less digits than its factorization.

40817128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463848 (or 463844 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 40817128 is about 6388.8283745926. The cubic root of 40817128 is about 344.3082913224.

The spelling of 40817128 in words is "forty million, eight hundred seventeen thousand, one hundred twenty-eight".