40228918 has 4 divisors (see below), whose sum is σ = 60343380. Its totient is φ = 20114458.

The previous prime is 40228891. The next prime is 40228927. The reversal of 40228918 is 81982204.

40228918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10057228 + ... + 10057231.

It is an arithmetic number, because the mean of its divisors is an integer number (15085845).

Almost surely, 2^40228918 is an apocalyptic number.

40228918 is a deficient number, since it is larger than the sum of its proper divisors (20114462).

40228918 is a wasteful number, since it uses less digits than its factorization.

40228918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20114461.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 40228918 is about 6342.6270582464. The cubic root of 40228918 is about 342.6463558358.

The spelling of 40228918 in words is "forty million, two hundred twenty-eight thousand, nine hundred eighteen".