38166216 has 32 divisors (see below), whose sum is σ = 104090400. Its totient is φ = 11565440.

The previous prime is 38166199. The next prime is 38166217. The reversal of 38166216 is 61266183.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (38166217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72021 + ... + 72548.

It is an arithmetic number, because the mean of its divisors is an integer number (3252825).

Almost surely, 2^38166216 is an apocalyptic number.

It is an amenable number.

38166216 is an abundant number, since it is smaller than the sum of its proper divisors (65924184).

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

38166216 is a wasteful number, since it uses less digits than its factorization.

38166216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144589 (or 144585 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 38166216 is about 6177.8811901816. The cubic root of 38166216 is about 336.6870155113.

Subtracting from 38166216 its sum of digits (33), we obtain a palindrome (38166183).

The spelling of 38166216 in words is "thirty-eight million, one hundred sixty-six thousand, two hundred sixteen".