38449540 has 24 divisors (see below), whose sum is σ = 84994560. Its totient is φ = 14570208.

The previous prime is 38449531. The next prime is 38449561. The reversal of 38449540 is 4594483.

It is a self number, because there is not a number n which added to its sum of digits gives 38449540.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50212 + ... + 50971.

It is an arithmetic number, because the mean of its divisors is an integer number (3541440).

Almost surely, 2^38449540 is an apocalyptic number.

It is an amenable number.

38449540 is an abundant number, since it is smaller than the sum of its proper divisors (46545020).

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

38449540 is a wasteful number, since it uses less digits than its factorization.

38449540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101211 (or 101209 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 38449540 is about 6200.7693071102. The cubic root of 38449540 is about 337.5180859078.

The spelling of 38449540 in words is "thirty-eight million, four hundred forty-nine thousand, five hundred forty".