38686788 has 96 divisors (see below), whose sum is σ = 116363520. Its totient is φ = 10886400.

The previous prime is 38686777. The next prime is 38686811. The reversal of 38686788 is 88768683.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54838 + ... + 55538.

It is an arithmetic number, because the mean of its divisors is an integer number (1212120).

Almost surely, 2^38686788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38686788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58181760).

38686788 is an abundant number, since it is smaller than the sum of its proper divisors (77676732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38686788 is a wasteful number, since it uses less digits than its factorization.

38686788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 786 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 38686788 is about 6219.8704166566. The cubic root of 38686788 is about 338.2108671008.

The spelling of 38686788 in words is "thirty-eight million, six hundred eighty-six thousand, seven hundred eighty-eight".