40018680 has 192 divisors, whose sum is σ = 148599360. Its totient is φ = 9252864.

The previous prime is 40018679. The next prime is 40018691. The reversal of 40018680 is 8681004.

40018680 is a `hidden beast` number, since 400 + 186 + 80 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79309 + ... + 79811.

It is an arithmetic number, because the mean of its divisors is an integer number (773955).

Almost surely, 2^40018680 is an apocalyptic number.

40018680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40018680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74299680).

40018680 is an abundant number, since it is smaller than the sum of its proper divisors (108580680).

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

40018680 is a wasteful number, since it uses less digits than its factorization.

40018680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 40018680 is about 6326.0319316298. The cubic root of 40018680 is about 342.0484183014.

Adding to 40018680 its reverse (8681004), we get a palindrome (48699684).

The spelling of 40018680 in words is "forty million, eighteen thousand, six hundred eighty".