16004900 has 18 divisors (see below), whose sum is σ = 34730850. Its totient is φ = 6401920.

The previous prime is 16004899. The next prime is 16004909. The reversal of 16004900 is 940061.

16004900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 5494336 + 10510564 = 2344^2 + 3242^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (16004909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79925 + ... + 80124.

Almost surely, 2^16004900 is an apocalyptic number.

16004900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16004900 is an abundant number, since it is smaller than the sum of its proper divisors (18725950).

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

16004900 is a wasteful number, since it uses less digits than its factorization.

16004900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160063 (or 160056 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 16004900 is about 4000.6124531126. The cubic root of 16004900 is about 252.0099307416.

Adding to 16004900 its reverse (940061), we get a palindrome (16944961).

It can be divided in two parts, 1600 and 4900, that multiplied together give a square (7840000 = 2800²).

The spelling of 16004900 in words is "sixteen million, four thousand, nine hundred".