16870004 has 6 divisors (see below), whose sum is σ = 29522514. Its totient is φ = 8435000.

The previous prime is 16869991. The next prime is 16870019. The reversal of 16870004 is 40007861.

It can be written as a sum of positive squares in only one way, i.e., 11356900 + 5513104 = 3370^2 + 2348^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2108747 + ... + 2108754.

It is an arithmetic number, because the mean of its divisors is an integer number (4920419).

Almost surely, 2^16870004 is an apocalyptic number.

It is an amenable number.

16870004 is a deficient number, since it is larger than the sum of its proper divisors (12652510).

16870004 is a wasteful number, since it uses less digits than its factorization.

16870004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217505 (or 4217503 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 16870004 is about 4107.3110425192. The cubic root of 16870004 is about 256.4710767925.

Adding to 16870004 its reverse (40007861), we get a palindrome (56877865).

The spelling of 16870004 in words is "sixteen million, eight hundred seventy thousand, four".