38947030 has 8 divisors (see below), whose sum is σ = 70104672. Its totient is φ = 15578808.

The previous prime is 38947019. The next prime is 38947039. The reversal of 38947030 is 3074983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×38947030² = 3033742291641800, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38947039) 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, 1947342 + ... + 1947361.

It is an arithmetic number, because the mean of its divisors is an integer number (8763084).

Almost surely, 2^38947030 is an apocalyptic number.

38947030 is a deficient number, since it is larger than the sum of its proper divisors (31157642).

38947030 is a wasteful number, since it uses less digits than its factorization.

38947030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894710.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 38947030 is about 6240.7555632311. The cubic root of 38947030 is about 338.9675427138.

The spelling of 38947030 in words is "thirty-eight million, nine hundred forty-seven thousand, thirty".