38221316 has 12 divisors (see below), whose sum is σ = 76442688. Its totient is φ = 16380552.

The previous prime is 38221303. The next prime is 38221361. The reversal of 38221316 is 61312283.

38221316 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682496 + ... + 682551.

It is an arithmetic number, because the mean of its divisors is an integer number (6370224).

Almost surely, 2^38221316 is an apocalyptic number.

It is an amenable number.

38221316 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

38221316 is a wasteful number, since it uses less digits than its factorization.

38221316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365058 (or 1365056 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 38221316 is about 6182.3390395545. The cubic root of 38221316 is about 336.8489609539.

Adding to 38221316 its reverse (61312283), we get a palindrome (99533599).

The spelling of 38221316 in words is "thirty-eight million, two hundred twenty-one thousand, three hundred sixteen".