40120786 has 16 divisors (see below), whose sum is σ = 62938944. Its totient is φ = 19145104.

The previous prime is 40120781. The next prime is 40120813. The reversal of 40120786 is 68702104.

It is not an unprimeable number, because it can be changed into a prime (40120781) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 30780 + ... + 32056.

It is an arithmetic number, because the mean of its divisors is an integer number (3933684).

Almost surely, 2^40120786 is an apocalyptic number.

40120786 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

40120786 is a deficient number, since it is larger than the sum of its proper divisors (22818158).

40120786 is a wasteful number, since it uses less digits than its factorization.

40120786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 40120786 is about 6334.0970942984. The cubic root of 40120786 is about 342.3390786833.

The spelling of 40120786 in words is "forty million, one hundred twenty thousand, seven hundred eighty-six".