16204220 has 24 divisors (see below), whose sum is σ = 34673184. Its totient is φ = 6358976.

The previous prime is 16204211. The next prime is 16204229. The reversal of 16204220 is 2240261.

It is an interprime number because it is at equal distance from previous prime (16204211) and next prime (16204229).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16204229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6584 + ... + 8703.

It is an arithmetic number, because the mean of its divisors is an integer number (1444716).

Almost surely, 2^16204220 is an apocalyptic number.

16204220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16204220 is an abundant number, since it is smaller than the sum of its proper divisors (18468964).

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

16204220 is a wasteful number, since it uses less digits than its factorization.

16204220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15349 (or 15347 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 16204220 is about 4025.4465590789. The cubic root of 16204220 is about 253.0517685833.

Adding to 16204220 its reverse (2240261), we get a palindrome (18444481).

The spelling of 16204220 in words is "sixteen million, two hundred four thousand, two hundred twenty".