16220244 has 48 divisors (see below), whose sum is σ = 41827968. Its totient is φ = 4866048.

The previous prime is 16220233. The next prime is 16220249. The reversal of 16220244 is 44202261.

It is a self number, because there is not a number n which added to its sum of digits gives 16220244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16220249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2964 + ... + 6420.

It is an arithmetic number, because the mean of its divisors is an integer number (871416).

Almost surely, 2^16220244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16220244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20913984).

16220244 is an abundant number, since it is smaller than the sum of its proper divisors (25607724).

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

16220244 is a wasteful number, since it uses less digits than its factorization.

16220244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3504 (or 3502 counting only the distinct ones).

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

The square root of 16220244 is about 4027.4364054570. The cubic root of 16220244 is about 253.1351535631.

The spelling of 16220244 in words is "sixteen million, two hundred twenty thousand, two hundred forty-four".