40434018 has 32 divisors (see below), whose sum is σ = 84338496. Its totient is φ = 12911808.

The previous prime is 40434011. The next prime is 40434029. The reversal of 40434018 is 81043404.

40434018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40434011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12196 + ... + 15152.

It is an arithmetic number, because the mean of its divisors is an integer number (2635578).

Almost surely, 2^40434018 is an apocalyptic number.

40434018 is an abundant number, since it is smaller than the sum of its proper divisors (43904478).

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

40434018 is a wasteful number, since it uses less digits than its factorization.

40434018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 40434018 is about 6358.7748820036. The cubic root of 40434018 is about 343.2276762473.

The spelling of 40434018 in words is "forty million, four hundred thirty-four thousand, eighteen".