40672836 has 36 divisors (see below), whose sum is σ = 104756652. Its totient is φ = 13301184.

The previous prime is 40672831. The next prime is 40672859. The reversal of 40672836 is 63827604.

It can be written as a sum of positive squares in 2 ways, for example, as 37454400 + 3218436 = 6120^2 + 1794^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 40672836.

It is not an unprimeable number, because it can be changed into a prime (40672831) 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, 8751 + ... + 12566.

It is an arithmetic number, because the mean of its divisors is an integer number (2909907).

Almost surely, 2^40672836 is an apocalyptic number.

It is an amenable number.

40672836 is an abundant number, since it is smaller than the sum of its proper divisors (64083816).

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

40672836 is a wasteful number, since it uses less digits than its factorization.

40672836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21380 (or 21375 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 40672836 is about 6377.5258525544. The cubic root of 40672836 is about 343.9020926524.

It can be divided in two parts, 4067 and 2836, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 40672836 in words is "forty million, six hundred seventy-two thousand, eight hundred thirty-six".