38857788 has 18 divisors (see below), whose sum is σ = 98223944. Its totient is φ = 12952584.

The previous prime is 38857783. The next prime is 38857811. The reversal of 38857788 is 88775883.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38857783) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 539656 + ... + 539727.

Almost surely, 2^38857788 is an apocalyptic number.

It is an amenable number.

38857788 is an abundant number, since it is smaller than the sum of its proper divisors (59366156).

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

38857788 is a wasteful number, since it uses less digits than its factorization.

38857788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079393 (or 1079388 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 54.

The square root of 38857788 is about 6233.6015272072. The cubic root of 38857788 is about 338.7084448601.

The spelling of 38857788 in words is "thirty-eight million, eight hundred fifty-seven thousand, seven hundred eighty-eight".