38117128 has 32 divisors (see below), whose sum is σ = 86486400. Its totient is φ = 15374592.

The previous prime is 38117119. The next prime is 38117129. The reversal of 38117128 is 82171183.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 38117128.

It is not an unprimeable number, because it can be changed into a prime (38117129) 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 7 ways as a sum of consecutive naturals, for example, 19068 + ... + 20971.

It is an arithmetic number, because the mean of its divisors is an integer number (2702700).

Almost surely, 2^38117128 is an apocalyptic number.

It is an amenable number.

38117128 is an abundant number, since it is smaller than the sum of its proper divisors (48369272).

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

38117128 is a wasteful number, since it uses less digits than its factorization.

38117128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40069 (or 40065 counting only the distinct ones).

The product of its digits is 2688, while the sum is 31.

The square root of 38117128 is about 6173.9070287785. The cubic root of 38117128 is about 336.5426087155.

The spelling of 38117128 in words is "thirty-eight million, one hundred seventeen thousand, one hundred twenty-eight".