16238220 has 48 divisors (see below), whose sum is σ = 45846528. Its totient is φ = 4294080.

The previous prime is 16238143. The next prime is 16238237. The reversal of 16238220 is 2283261.

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, 6555 + ... + 8685.

It is an arithmetic number, because the mean of its divisors is an integer number (955136).

Almost surely, 2^16238220 is an apocalyptic number.

16238220 is a gapful number since it is divisible by the number (10) 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 16238220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22923264).

16238220 is an abundant number, since it is smaller than the sum of its proper divisors (29608308).

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

16238220 is a wasteful number, since it uses less digits than its factorization.

16238220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270 (or 2268 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 16238220 is about 4029.6674800782. The cubic root of 16238220 is about 253.2286309400.

The spelling of 16238220 in words is "sixteen million, two hundred thirty-eight thousand, two hundred twenty".