38857707 has 12 divisors (see below), whose sum is σ = 64146160. Its totient is φ = 22204368.

The previous prime is 38857691. The next prime is 38857711. The reversal of 38857707 is 70775883.

It is not a de Polignac number, because 38857707 - 2⁴ = 38857691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38857747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308332 + ... + 308457.

Almost surely, 2^38857707 is an apocalyptic number.

38857707 is a deficient number, since it is larger than the sum of its proper divisors (25288453).

38857707 is a wasteful number, since it uses less digits than its factorization.

38857707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616802 (or 616799 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 38857707 is about 6233.5950301572. The cubic root of 38857707 is about 338.7082095113.

The spelling of 38857707 in words is "thirty-eight million, eight hundred fifty-seven thousand, seven hundred seven".