40672745 has 4 divisors (see below), whose sum is σ = 48807300. Its totient is φ = 32538192.

The previous prime is 40672729. The next prime is 40672757. The reversal of 40672745 is 54727604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10784656 + 29888089 = 3284^2 + 5467^2 .

It is a cyclic number.

It is not a de Polignac number, because 40672745 - 2⁴ = 40672729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4067270 + ... + 4067279.

It is an arithmetic number, because the mean of its divisors is an integer number (12201825).

Almost surely, 2^40672745 is an apocalyptic number.

It is an amenable number.

40672745 is a deficient number, since it is larger than the sum of its proper divisors (8134555).

40672745 is an equidigital number, since it uses as much as digits as its factorization.

40672745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8134554.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 40672745 is about 6377.5187181223. The cubic root of 40672745 is about 343.9018361740.

The spelling of 40672745 in words is "forty million, six hundred seventy-two thousand, seven hundred forty-five".