38378904 has 64 divisors (see below), whose sum is σ = 100880640. Its totient is φ = 12144000.

The previous prime is 38378891. The next prime is 38378909. The reversal of 38378904 is 40987383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38378909) 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, 138414 + ... + 138690.

It is an arithmetic number, because the mean of its divisors is an integer number (1576260).

Almost surely, 2^38378904 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 38378904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50440320).

38378904 is an abundant number, since it is smaller than the sum of its proper divisors (62501736).

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

38378904 is a wasteful number, since it uses less digits than its factorization.

38378904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 38378904 is about 6195.0709439037. The cubic root of 38378904 is about 337.3112733608.

The spelling of 38378904 in words is "thirty-eight million, three hundred seventy-eight thousand, nine hundred four".