38117540 has 24 divisors (see below), whose sum is σ = 81406080. Its totient is φ = 14988128.

The previous prime is 38117539. The next prime is 38117551. The reversal of 38117540 is 4571183.

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, 14972 + ... + 17331.

It is an arithmetic number, because the mean of its divisors is an integer number (3391920).

Almost surely, 2^38117540 is an apocalyptic number.

It is an amenable number.

38117540 is an abundant number, since it is smaller than the sum of its proper divisors (43288540).

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

38117540 is a wasteful number, since it uses less digits than its factorization.

38117540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32371 (or 32369 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 38117540 is about 6173.9403949180. The cubic root of 38117540 is about 336.5438212505.

The spelling of 38117540 in words is "thirty-eight million, one hundred seventeen thousand, five hundred forty".