38121204 has 48 divisors (see below), whose sum is σ = 98884800. Its totient is φ = 11331840.

The previous prime is 38121199. The next prime is 38121221. The reversal of 38121204 is 40212183.

38121204 = T₁₉₄ + T₁₉₅ + ... + T₆₁₇.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4272 + ... + 9720.

It is an arithmetic number, because the mean of its divisors is an integer number (2060100).

Almost surely, 2^38121204 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 38121204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49442400).

38121204 is an abundant number, since it is smaller than the sum of its proper divisors (60763596).

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

38121204 is a wasteful number, since it uses less digits than its factorization.

38121204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520 (or 5518 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 38121204 is about 6174.2371188674. The cubic root of 38121204 is about 336.5546041871.

Adding to 38121204 its reverse (40212183), we get a palindrome (78333387).

The spelling of 38121204 in words is "thirty-eight million, one hundred twenty-one thousand, two hundred four".