38705757 has 16 divisors (see below), whose sum is σ = 54190080. Its totient is φ = 24526832.

The previous prime is 38705747. The next prime is 38705759. The reversal of 38705757 is 75750783.

It is not a de Polignac number, because 38705757 - 2⁸ = 38705501 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38705759) 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, 9844 + ... + 13202.

It is an arithmetic number, because the mean of its divisors is an integer number (3386880).

Almost surely, 2^38705757 is an apocalyptic number.

It is an amenable number.

38705757 is a deficient number, since it is larger than the sum of its proper divisors (15484323).

38705757 is a wasteful number, since it uses less digits than its factorization.

38705757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3552.

The product of its (nonzero) digits is 205800, while the sum is 42.

The square root of 38705757 is about 6221.3951007792. The cubic root of 38705757 is about 338.2661355270.

The spelling of 38705757 in words is "thirty-eight million, seven hundred five thousand, seven hundred fifty-seven".