16363220 has 48 divisors (see below), whose sum is σ = 35925120. Its totient is φ = 6254976.

The previous prime is 16363181. The next prime is 16363229. The reversal of 16363220 is 2236361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16363229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45401 + ... + 45759.

It is an arithmetic number, because the mean of its divisors is an integer number (748440).

Almost surely, 2^16363220 is an apocalyptic number.

16363220 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 16363220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17962560).

16363220 is an abundant number, since it is smaller than the sum of its proper divisors (19561900).

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

16363220 is a wasteful number, since it uses less digits than its factorization.

16363220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 16363220 is about 4045.1477105292. The cubic root of 16363220 is about 253.8767459540.

Adding to 16363220 its reverse (2236361), we get a palindrome (18599581).

The spelling of 16363220 in words is "sixteen million, three hundred sixty-three thousand, two hundred twenty".