38428908 has 72 divisors (see below), whose sum is σ = 108928512. Its totient is φ = 10327296.

The previous prime is 38428877. The next prime is 38428909. The reversal of 38428908 is 80982483.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 38428908.

It is not an unprimeable number, because it can be changed into a prime (38428909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23485 + ... + 25067.

It is an arithmetic number, because the mean of its divisors is an integer number (1512896).

Almost surely, 2^38428908 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 38428908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54464256).

38428908 is an abundant number, since it is smaller than the sum of its proper divisors (70499604).

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

38428908 is a wasteful number, since it uses less digits than its factorization.

38428908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 38428908 is about 6199.1054193327. The cubic root of 38428908 is about 337.4577044391.

It can be divided in two parts, 384 and 28908, that added together give a palindrome (29292).

The spelling of 38428908 in words is "thirty-eight million, four hundred twenty-eight thousand, nine hundred eight".