38223218 has 32 divisors (see below), whose sum is σ = 65257920. Its totient is φ = 16632000.

The previous prime is 38223187. The next prime is 38223221. The reversal of 38223218 is 81232283.

It is a super-2 number, since 2×38223218² = 2922028788551048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115313 + ... + 115643.

It is an arithmetic number, because the mean of its divisors is an integer number (2039310).

Almost surely, 2^38223218 is an apocalyptic number.

38223218 is a deficient number, since it is larger than the sum of its proper divisors (27034702).

38223218 is a wasteful number, since it uses less digits than its factorization.

38223218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554.

The product of its digits is 4608, while the sum is 29.

The square root of 38223218 is about 6182.4928629154. The cubic root of 38223218 is about 336.8545483779.

The spelling of 38223218 in words is "thirty-eight million, two hundred twenty-three thousand, two hundred eighteen".