38389428 has 108 divisors (see below), whose sum is σ = 121998240. Its totient is φ = 9963360.

The previous prime is 38389427. The next prime is 38389447. The reversal of 38389428 is 82498383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38389427) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29863 + ... + 31121.

Almost surely, 2^38389428 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 38389428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60999120).

38389428 is an abundant number, since it is smaller than the sum of its proper divisors (83608812).

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

38389428 is a wasteful number, since it uses less digits than its factorization.

38389428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298 (or 1282 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 38389428 is about 6195.9202706297. The cubic root of 38389428 is about 337.3421022715.

The spelling of 38389428 in words is "thirty-eight million, three hundred eighty-nine thousand, four hundred twenty-eight".