38849021928 has 64 divisors (see below), whose sum is σ = 114261840000. Its totient is φ = 12187927296.

The previous prime is 38849021923. The next prime is 38849021969. The reversal of 38849021928 is 82912094883.

38849021928 is a `hidden beast` number, since 388 + 49 + 0 + 219 + 2 + 8 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (38849021923) 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, 5286228 + ... + 5293571.

It is an arithmetic number, because the mean of its divisors is an integer number (1785341250).

Almost surely, 2^38849021928 is an apocalyptic number.

It is an amenable number.

38849021928 is an abundant number, since it is smaller than the sum of its proper divisors (75412818072).

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

38849021928 is a wasteful number, since it uses less digits than its factorization.

38849021928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10579831 (or 10579821 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 38849021928 in words is "thirty-eight billion, eight hundred forty-nine million, twenty-one thousand, nine hundred twenty-eight".