38222220 has 48 divisors (see below), whose sum is σ = 107815680. Its totient is φ = 10117056.

The previous prime is 38222201. The next prime is 38222231. The reversal of 38222220 is 2222283.

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, 6049 + ... + 10631.

It is an arithmetic number, because the mean of its divisors is an integer number (2246160).

Almost surely, 2^38222220 is an apocalyptic number.

38222220 is a gapful number since it is divisible by the number (30) 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 38222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53907840).

38222220 is an abundant number, since it is smaller than the sum of its proper divisors (69593460).

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

38222220 is a wasteful number, since it uses less digits than its factorization.

38222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4734 (or 4732 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 38222220 is about 6182.4121506092. The cubic root of 38222220 is about 336.8516166191.

The spelling of 38222220 in words is "thirty-eight million, two hundred twenty-two thousand, two hundred twenty".