38218716 has 30 divisors (see below), whose sum is σ = 99912120. Its totient is φ = 12739464.

The previous prime is 38218657. The next prime is 38218717. The reversal of 38218716 is 61781283.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38218717) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 58656 + ... + 59303.

It is an arithmetic number, because the mean of its divisors is an integer number (3330404).

Almost surely, 2^38218716 is an apocalyptic number.

38218716 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

38218716 is an abundant number, since it is smaller than the sum of its proper divisors (61693404).

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

38218716 is a wasteful number, since it uses less digits than its factorization.

38218716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117975 (or 117964 counting only the distinct ones).

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

The square root of 38218716 is about 6182.1287595779. The cubic root of 38218716 is about 336.8413227452.

Adding to 38218716 its reverse (61781283), we get a palindrome (99999999).

The spelling of 38218716 in words is "thirty-eight million, two hundred eighteen thousand, seven hundred sixteen".