16220700 has 108 divisors (see below), whose sum is σ = 51793560. Its totient is φ = 4245120.

The previous prime is 16220683. The next prime is 16220713. The reversal of 16220700 is 702261.

It is a happy number.

16220700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16220700² = 526222216980000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 60166 + ... + 60434.

It is an arithmetic number, because the mean of its divisors is an integer number (479570).

Almost surely, 2^16220700 is an apocalyptic number.

16220700 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 16220700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25896780).

16220700 is an abundant number, since it is smaller than the sum of its proper divisors (35572860).

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

16220700 is a wasteful number, since it uses less digits than its factorization.

16220700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 16220700 is about 4027.4930167537. The cubic root of 16220700 is about 253.1375256719.

Adding to 16220700 its reverse (702261), we get a palindrome (16922961).

The spelling of 16220700 in words is "sixteen million, two hundred twenty thousand, seven hundred".