38178216 has 96 divisors (see below), whose sum is σ = 110073600. Its totient is φ = 12389760.

The previous prime is 38178211. The next prime is 38178223. The reversal of 38178216 is 61287183.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (38178211) 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 23 ways as a sum of consecutive naturals, for example, 79465 + ... + 79943.

It is an arithmetic number, because the mean of its divisors is an integer number (1146600).

Almost surely, 2^38178216 is an apocalyptic number.

38178216 is a gapful number since it is divisible by the number (36) 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 38178216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55036800).

38178216 is an abundant number, since it is smaller than the sum of its proper divisors (71895384).

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

38178216 is a wasteful number, since it uses less digits than its factorization.

38178216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541 (or 525 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 38178216 is about 6178.8523206175. The cubic root of 38178216 is about 336.7222982059.

The spelling of 38178216 in words is "thirty-eight million, one hundred seventy-eight thousand, two hundred sixteen".