40828631 has 6 divisors (see below), whose sum is σ = 41074632. Its totient is φ = 40584060.

The previous prime is 40828597. The next prime is 40828633. The reversal of 40828631 is 13682804.

It is a de Polignac number, because none of the positive numbers 2^k-40828631 is a prime.

It is a super-2 number, since 2×40828631² = 3333954218668322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40828633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39086 + ... + 40116.

It is an arithmetic number, because the mean of its divisors is an integer number (6845772).

Almost surely, 2^40828631 is an apocalyptic number.

40828631 is a deficient number, since it is larger than the sum of its proper divisors (246001).

40828631 is an equidigital number, since it uses as much as digits as its factorization.

40828631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429 (or 1230 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 40828631 is about 6389.7285544849. The cubic root of 40828631 is about 344.3406323719.

The spelling of 40828631 in words is "forty million, eight hundred twenty-eight thousand, six hundred thirty-one".