16223700 has 72 divisors (see below), whose sum is σ = 48121920. Its totient is φ = 4217600.

The previous prime is 16223693. The next prime is 16223707. The reversal of 16223700 is 732261.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16223693) and next prime (16223707).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16223707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11641 + ... + 12959.

It is an arithmetic number, because the mean of its divisors is an integer number (668360).

Almost surely, 2^16223700 is an apocalyptic number.

16223700 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 16223700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24060960).

16223700 is an abundant number, since it is smaller than the sum of its proper divisors (31898220).

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

16223700 is a wasteful number, since it uses less digits than its factorization.

16223700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 16223700 is about 4027.8654396591. The cubic root of 16223700 is about 253.1531305423.

Adding to 16223700 its reverse (732261), we get a palindrome (16955961).

The spelling of 16223700 in words is "sixteen million, two hundred twenty-three thousand, seven hundred".