40671918 has 48 divisors (see below), whose sum is σ = 103180896. Its totient is φ = 11335680.

The previous prime is 40671901. The next prime is 40671929. The reversal of 40671918 is 81917604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1230 + ... + 9102.

It is an arithmetic number, because the mean of its divisors is an integer number (2149602).

Almost surely, 2^40671918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40671918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51590448).

40671918 is an abundant number, since it is smaller than the sum of its proper divisors (62508978).

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

40671918 is a wasteful number, since it uses less digits than its factorization.

40671918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7929 (or 7926 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 40671918 is about 6377.4538806643. The cubic root of 40671918 is about 343.8995053031.

The spelling of 40671918 in words is "forty million, six hundred seventy-one thousand, nine hundred eighteen".