40680396 has 18 divisors (see below), whose sum is σ = 102831092. Its totient is φ = 13560120.

The previous prime is 40680389. The next prime is 40680397. The reversal of 40680396 is 69308604.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1130011 = 40680396 / (4 + 0 + 6 + 8 + 0 + 3 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 40680396.

It is not an unprimeable number, because it can be changed into a prime (40680397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 564970 + ... + 565041.

Almost surely, 2^40680396 is an apocalyptic number.

It is an amenable number.

40680396 is an abundant number, since it is smaller than the sum of its proper divisors (62150696).

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

40680396 is a wasteful number, since it uses less digits than its factorization.

40680396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130021 (or 1130016 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 40680396 is about 6378.1185313539. The cubic root of 40680396 is about 343.9233987542.

The spelling of 40680396 in words is "forty million, six hundred eighty thousand, three hundred ninety-six".