40267643 has 8 divisors (see below), whose sum is σ = 43915200. Its totient is φ = 36698688.

The previous prime is 40267639. The next prime is 40267649. The reversal of 40267643 is 34676204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40267643 - 2² = 40267639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40267649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18578 + ... + 20631.

It is an arithmetic number, because the mean of its divisors is an integer number (5489400).

Almost surely, 2^40267643 is an apocalyptic number.

40267643 is a deficient number, since it is larger than the sum of its proper divisors (3647557).

40267643 is a wasteful number, since it uses less digits than its factorization.

40267643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39301.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 40267643 is about 6345.6790810756. The cubic root of 40267643 is about 342.7562661973.

The spelling of 40267643 in words is "forty million, two hundred sixty-seven thousand, six hundred forty-three".