40338530 has 8 divisors (see below), whose sum is σ = 72609372. Its totient is φ = 16135408.

The previous prime is 40338523. The next prime is 40338541. The reversal of 40338530 is 3583304.

It can be written as a sum of positive squares in 2 ways, for example, as 38353249 + 1985281 = 6193^2 + 1409^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 40338530.

It is an unprimeable number.

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, 2016917 + ... + 2016936.

Almost surely, 2^40338530 is an apocalyptic number.

40338530 is a deficient number, since it is larger than the sum of its proper divisors (32270842).

40338530 is a wasteful number, since it uses less digits than its factorization.

40338530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033860.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 40338530 is about 6351.2620793036. The cubic root of 40338530 is about 342.9572772170.

The spelling of 40338530 in words is "forty million, three hundred thirty-eight thousand, five hundred thirty".