16810004 has 6 divisors (see below), whose sum is σ = 29417514. Its totient is φ = 8405000.

The previous prime is 16809997. The next prime is 16810007. The reversal of 16810004 is 40001861.

It can be written as a sum of positive squares in only one way, i.e., 16810000 + 4 = 4100^2 + 2^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16810007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2101247 + ... + 2101254.

It is an arithmetic number, because the mean of its divisors is an integer number (4902919).

Almost surely, 2^16810004 is an apocalyptic number.

It is an amenable number.

16810004 is a deficient number, since it is larger than the sum of its proper divisors (12607510).

16810004 is a wasteful number, since it uses less digits than its factorization.

16810004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4202505 (or 4202503 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 16810004 is about 4100.0004878048. Note that the first 3 decimals coincide. The cubic root of 16810004 is about 256.1666598703.

Adding to 16810004 its reverse (40001861), we get a palindrome (56811865).

The spelling of 16810004 in words is "sixteen million, eight hundred ten thousand, four".