16366220 has 48 divisors (see below), whose sum is σ = 38972640. Its totient is φ = 5723136.

The previous prime is 16366219. The next prime is 16366249. The reversal of 16366220 is 2266361.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 16366220.

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, 3284 + ... + 6596.

It is an arithmetic number, because the mean of its divisors is an integer number (811930).

Almost surely, 2^16366220 is an apocalyptic number.

16366220 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 16366220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19486320).

16366220 is an abundant number, since it is smaller than the sum of its proper divisors (22606420).

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

16366220 is a wasteful number, since it uses less digits than its factorization.

16366220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354 (or 3352 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 16366220 is about 4045.5185081767. The cubic root of 16366220 is about 253.8922600907.

The spelling of 16366220 in words is "sixteen million, three hundred sixty-six thousand, two hundred twenty".