40680826 has 4 divisors (see below), whose sum is σ = 61021242. Its totient is φ = 20340412.

The previous prime is 40680821. The next prime is 40680833. The reversal of 40680826 is 62808604.

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

It can be written as a sum of positive squares in only one way, i.e., 29691601 + 10989225 = 5449^2 + 3315^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40680791 and 40680800.

It is not an unprimeable number, because it can be changed into a prime (40680821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10170205 + ... + 10170208.

Almost surely, 2^40680826 is an apocalyptic number.

40680826 is a deficient number, since it is larger than the sum of its proper divisors (20340416).

40680826 is a wasteful number, since it uses less digits than its factorization.

40680826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20340415.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 40680826 is about 6378.1522402652. The cubic root of 40680826 is about 343.9246105299.

The spelling of 40680826 in words is "forty million, six hundred eighty thousand, eight hundred twenty-six".