38421504 has 132 divisors (see below), whose sum is σ = 121346160. Its totient is φ = 11612160.

The previous prime is 38421463. The next prime is 38421529. The reversal of 38421504 is 40512483.

It is a tau number, because it is divible by the number of its divisors (132).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101187 + ... + 101565.

Almost surely, 2^38421504 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 38421504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60673080).

38421504 is an abundant number, since it is smaller than the sum of its proper divisors (82924656).

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

38421504 is a wasteful number, since it uses less digits than its factorization.

38421504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 38421504 is about 6198.5082076254. The cubic root of 38421504 is about 337.4360306745.

Adding to 38421504 its reverse (40512483), we get a palindrome (78933987).

The spelling of 38421504 in words is "thirty-eight million, four hundred twenty-one thousand, five hundred four".