38040040 has 16 divisors (see below), whose sum is σ = 85590180. Its totient is φ = 15216000.

The previous prime is 38040031. The next prime is 38040049. The reversal of 38040040 is 4004083.

It is an interprime number because it is at equal distance from previous prime (38040031) and next prime (38040049).

It can be written as a sum of positive squares in 2 ways, for example, as 30846916 + 7193124 = 5554^2 + 2682^2 .

It is not an unprimeable number, because it can be changed into a prime (38040049) 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, 475461 + ... + 475540.

Almost surely, 2^38040040 is an apocalyptic number.

It is an amenable number.

38040040 is an abundant number, since it is smaller than the sum of its proper divisors (47550140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38040040 is a wasteful number, since it uses less digits than its factorization.

38040040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951012 (or 951008 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 38040040 is about 6167.6608207650. The cubic root of 38040040 is about 336.3155812439.

The spelling of 38040040 in words is "thirty-eight million, forty thousand, forty".