38391768 has 24 divisors (see below), whose sum is σ = 103977900. Its totient is φ = 12797232.

The previous prime is 38391767. The next prime is 38391779. The reversal of 38391768 is 86719383.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38391767) 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, 266538 + ... + 266681.

Almost surely, 2^38391768 is an apocalyptic number.

It is an amenable number.

38391768 is an abundant number, since it is smaller than the sum of its proper divisors (65586132).

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

38391768 is a wasteful number, since it uses less digits than its factorization.

38391768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533231 (or 533224 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 38391768 is about 6196.1091016863. The cubic root of 38391768 is about 337.3489562808.

The spelling of 38391768 in words is "thirty-eight million, three hundred ninety-one thousand, seven hundred sixty-eight".