38947188 has 96 divisors (see below), whose sum is σ = 114186240. Its totient is φ = 10074240.

The previous prime is 38947163. The next prime is 38947189. The reversal of 38947188 is 88174983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38947189) 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 31 ways as a sum of consecutive naturals, for example, 36178 + ... + 37238.

It is an arithmetic number, because the mean of its divisors is an integer number (1189440).

Almost surely, 2^38947188 is an apocalyptic number.

38947188 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38947188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57093120).

38947188 is an abundant number, since it is smaller than the sum of its proper divisors (75239052).

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

38947188 is a wasteful number, since it uses less digits than its factorization.

38947188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117 (or 1115 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The square root of 38947188 is about 6240.7682219419. The cubic root of 38947188 is about 338.9680010868.

The spelling of 38947188 in words is "thirty-eight million, nine hundred forty-seven thousand, one hundred eighty-eight".