40040766 has 24 divisors (see below), whose sum is σ = 88179624. Its totient is φ = 13127760.

The previous prime is 40040761. The next prime is 40040773. The reversal of 40040766 is 66704004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17136 + ... + 19331.

It is an arithmetic number, because the mean of its divisors is an integer number (3674151).

Almost surely, 2^40040766 is an apocalyptic number.

40040766 is an abundant number, since it is smaller than the sum of its proper divisors (48138858).

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

40040766 is a wasteful number, since it uses less digits than its factorization.

40040766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36536 (or 36533 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 40040766 is about 6327.7773348941. Note that the first 3 decimals coincide. The cubic root of 40040766 is about 342.1113313546. Note that the first 3 decimals are identical.

The spelling of 40040766 in words is "forty million, forty thousand, seven hundred sixty-six".