40845680 has 40 divisors (see below), whose sum is σ = 95907552. Its totient is φ = 16176384.

The previous prime is 40845667. The next prime is 40845683. The reversal of 40845680 is 8654804.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 40845680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40845683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5762 + ... + 10718.

Almost surely, 2^40845680 is an apocalyptic number.

40845680 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 40845680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47953776).

40845680 is an abundant number, since it is smaller than the sum of its proper divisors (55061872).

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

40845680 is a wasteful number, since it uses less digits than its factorization.

40845680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5073 (or 5067 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 40845680 is about 6391.0625094737. The cubic root of 40845680 is about 344.3885550048.

The spelling of 40845680 in words is "forty million, eight hundred forty-five thousand, six hundred eighty".