40089680 has 20 divisors (see below), whose sum is σ = 93208692. Its totient is φ = 16035840.

The previous prime is 40089649. The next prime is 40089691. The reversal of 40089680 is 8698004.

It can be written as a sum of positive squares in 2 ways, for example, as 28987456 + 11102224 = 5384^2 + 3332^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 40089680.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250481 + ... + 250640.

Almost surely, 2^40089680 is an apocalyptic number.

40089680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40089680 is an abundant number, since it is smaller than the sum of its proper divisors (53119012).

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

40089680 is a wasteful number, since it uses less digits than its factorization.

40089680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501134 (or 501128 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 40089680 is about 6331.6411774515. The cubic root of 40089680 is about 342.2505829710.

The spelling of 40089680 in words is "forty million, eighty-nine thousand, six hundred eighty".