40288426 has 8 divisors (see below), whose sum is σ = 61423524. Its totient is φ = 19813920.

The previous prime is 40288403. The next prime is 40288429. The reversal of 40288426 is 62488204.

It can be written as a sum of positive squares in 2 ways, for example, as 38452401 + 1836025 = 6201^2 + 1355^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 40288391 and 40288400.

It is not an unprimeable number, because it can be changed into a prime (40288429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164995 + ... + 165238.

Almost surely, 2^40288426 is an apocalyptic number.

40288426 is a deficient number, since it is larger than the sum of its proper divisors (21135098).

40288426 is a wasteful number, since it uses less digits than its factorization.

40288426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330296.

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 40288426 is about 6347.3164408276. The cubic root of 40288426 is about 342.8152240252.

The spelling of 40288426 in words is "forty million, two hundred eighty-eight thousand, four hundred twenty-six".