38947120 has 20 divisors (see below), whose sum is σ = 90552240. Its totient is φ = 15578816.

The previous prime is 38947099. The next prime is 38947123. The reversal of 38947120 is 2174983.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (38947123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243340 + ... + 243499.

It is an arithmetic number, because the mean of its divisors is an integer number (4527612).

Almost surely, 2^38947120 is an apocalyptic number.

It is an amenable number.

38947120 is an abundant number, since it is smaller than the sum of its proper divisors (51605120).

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

38947120 is a wasteful number, since it uses less digits than its factorization.

38947120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486852 (or 486846 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 38947120 is about 6240.7627738923. The cubic root of 38947120 is about 338.9678038125.

The spelling of 38947120 in words is "thirty-eight million, nine hundred forty-seven thousand, one hundred twenty".