38207945 has 16 divisors (see below), whose sum is σ = 48867840. Its totient is φ = 28611264.

The previous prime is 38207929. The next prime is 38207947. The reversal of 38207945 is 54970283.

It is not a de Polignac number, because 38207945 - 2⁴ = 38207929 is a prime.

It is a super-3 number, since 3×38207945³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 38207899 and 38207908.

It is not an unprimeable number, because it can be changed into a prime (38207947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1871 + ... + 8939.

It is an arithmetic number, because the mean of its divisors is an integer number (3054240).

Almost surely, 2^38207945 is an apocalyptic number.

It is an amenable number.

38207945 is a deficient number, since it is larger than the sum of its proper divisors (10659895).

38207945 is a wasteful number, since it uses less digits than its factorization.

38207945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7144.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 38207945 is about 6181.2575581349. The cubic root of 38207945 is about 336.8096763064.

The spelling of 38207945 in words is "thirty-eight million, two hundred seven thousand, nine hundred forty-five".