38408685 has 16 divisors (see below), whose sum is σ = 70233216. Its totient is φ = 17558208.

The previous prime is 38408683. The next prime is 38408707. The reversal of 38408685 is 58680483.

It is not a de Polignac number, because 38408685 - 2¹ = 38408683 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38408681) 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, 182794 + ... + 183003.

It is an arithmetic number, because the mean of its divisors is an integer number (4389576).

Almost surely, 2^38408685 is an apocalyptic number.

38408685 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38408685 is a deficient number, since it is larger than the sum of its proper divisors (31824531).

38408685 is a wasteful number, since it uses less digits than its factorization.

38408685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365812.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 38408685 is about 6197.4740822371. The cubic root of 38408685 is about 337.3984989697.

It can be divided in two parts, 38408 and 685, that added together give a palindrome (39093).

The spelling of 38408685 in words is "thirty-eight million, four hundred eight thousand, six hundred eighty-five".