40684746 has 32 divisors (see below), whose sum is σ = 85691520. Its totient is φ = 12852224.

The previous prime is 40684733. The next prime is 40684747. The reversal of 40684746 is 64748604.

40684746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40684747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14290 + ... + 16898.

It is an arithmetic number, because the mean of its divisors is an integer number (2677860).

Almost surely, 2^40684746 is an apocalyptic number.

40684746 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

40684746 is an abundant number, since it is smaller than the sum of its proper divisors (45006774).

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

40684746 is a wasteful number, since it uses less digits than its factorization.

40684746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2750.

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 40684746 is about 6378.4595318933. The cubic root of 40684746 is about 343.9356570212.

The spelling of 40684746 in words is "forty million, six hundred eighty-four thousand, seven hundred forty-six".