16200000 has 210 divisors, whose sum is σ = 60023502. Its totient is φ = 4320000.

The previous prime is 16199971. The next prime is 16200013. The reversal of 16200000 is 261.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 3 ways, for example, as 7485696 + 8714304 = 2736^2 + 2952^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

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 29 ways as a sum of consecutive naturals, for example, 3239998 + ... + 3240002.

Almost surely, 2^16200000 is an apocalyptic number.

16200000 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 16200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30011751).

16200000 is an abundant number, since it is smaller than the sum of its proper divisors (43823502).

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

16200000 is an frugal number, since it uses more digits than its factorization.

16200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 16200000 is about 4024.9223594996. The cubic root of 16200000 is about 253.0297995905.

Adding to 16200000 its reverse (261), we get a palindrome (16200261).

It can be divided in two parts, 16 and 200000, that multiplied together give a 5-th power (3200000 = 20⁵).

The spelling of 16200000 in words is "sixteen million, two hundred thousand".