38720585 has 8 divisors (see below), whose sum is σ = 46503240. Its totient is φ = 30950784.

The previous prime is 38720551. The next prime is 38720593. The reversal of 38720585 is 58502783.

It can be written as a sum of positive squares in 4 ways, for example, as 18757561 + 19963024 = 4331^2 + 4468^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 38720585 - 2⁸ = 38720329 is a prime.

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, 5639 + ... + 10451.

It is an arithmetic number, because the mean of its divisors is an integer number (5812905).

Almost surely, 2^38720585 is an apocalyptic number.

It is an amenable number.

38720585 is a deficient number, since it is larger than the sum of its proper divisors (7782655).

38720585 is a wasteful number, since it uses less digits than its factorization.

38720585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6427.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 38720585 is about 6222.5866807944. The cubic root of 38720585 is about 338.3093260863.

The spelling of 38720585 in words is "thirty-eight million, seven hundred twenty thousand, five hundred eighty-five".