40636780 has 12 divisors (see below), whose sum is σ = 85337280. Its totient is φ = 16254704.

The previous prime is 40636769. The next prime is 40636793. The reversal of 40636780 is 8763604.

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, 1015900 + ... + 1015939.

It is an arithmetic number, because the mean of its divisors is an integer number (7111440).

Almost surely, 2^40636780 is an apocalyptic number.

It is an amenable number.

40636780 is an abundant number, since it is smaller than the sum of its proper divisors (44700500).

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

40636780 is a wasteful number, since it uses less digits than its factorization.

40636780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031848 (or 2031846 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 40636780 is about 6374.6984242394. The cubic root of 40636780 is about 343.8004408626.

The spelling of 40636780 in words is "forty million, six hundred thirty-six thousand, seven hundred eighty".