40720680 has 384 divisors, whose sum is σ = 179262720. Its totient is φ = 7741440.

The previous prime is 40720663. The next prime is 40720681. The reversal of 40720680 is 8602704.

It is not an unprimeable number, because it can be changed into a prime (40720681) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 360304 + ... + 360416.

It is an arithmetic number, because the mean of its divisors is an integer number (466830).

Almost surely, 2^40720680 is an apocalyptic number.

40720680 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 40720680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89631360).

40720680 is an abundant number, since it is smaller than the sum of its proper divisors (138542040).

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

40720680 is a wasteful number, since it uses less digits than its factorization.

40720680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 40720680 is about 6381.2757345221. The cubic root of 40720680 is about 344.0368853544.

The spelling of 40720680 in words is "forty million, seven hundred twenty thousand, six hundred eighty".