40672805 has 16 divisors (see below), whose sum is σ = 50611440. Its totient is φ = 31352832.

The previous prime is 40672799. The next prime is 40672811. The reversal of 40672805 is 50827604.

40672805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40672799) and next prime (40672811).

It can be written as a sum of positive squares in 8 ways, for example, as 7656289 + 33016516 = 2767^2 + 5746^2 .

It is a cyclic number.

It is not a de Polignac number, because 40672805 - 2²⁴ = 23895589 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 19157 + ... + 21173.

It is an arithmetic number, because the mean of its divisors is an integer number (3163215).

Almost surely, 2^40672805 is an apocalyptic number.

It is an amenable number.

40672805 is a deficient number, since it is larger than the sum of its proper divisors (9938635).

40672805 is a wasteful number, since it uses less digits than its factorization.

40672805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 40672805 is about 6377.5234221444. The cubic root of 40672805 is about 343.9020052807.

The spelling of 40672805 in words is "forty million, six hundred seventy-two thousand, eight hundred five".