16000004 has 12 divisors (see below), whose sum is σ = 28683228. Its totient is φ = 7804800.

The previous prime is 15999989. The next prime is 16000057. The reversal of 16000004 is 40000061.

It can be written as a sum of positive squares in 2 ways, for example, as 774400 + 15225604 = 880^2 + 3902^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48617 + ... + 48944.

It is an arithmetic number, because the mean of its divisors is an integer number (2390269).

Almost surely, 2^16000004 is an apocalyptic number.

It is an amenable number.

16000004 is a deficient number, since it is larger than the sum of its proper divisors (12683224).

16000004 is a wasteful number, since it uses less digits than its factorization.

16000004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97606 (or 97604 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 16000004 is about 4000.0005000000. Note that the first 3 decimals coincide. The cubic root of 16000004 is about 251.9842309777.

Adding to 16000004 its reverse (40000061), we get a palindrome (56000065).

The spelling of 16000004 in words is "sixteen million, four", and thus it is an aban number.