16868944 has 10 divisors (see below), whose sum is σ = 32683610. Its totient is φ = 8434464.

The previous prime is 16868899. The next prime is 16868953. The reversal of 16868944 is 44986861.

16868944 = T₃₃₅₂ + T₃₃₅₃ + T₃₃₅₄.

It can be written as a sum of positive squares in only one way, i.e., 15210000 + 1658944 = 3900^2 + 1288^2 .

It is a super-2 number, since 2×16868944² = 569122543350272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16868894 and 16868903.

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, 527139 + ... + 527170.

It is an arithmetic number, because the mean of its divisors is an integer number (3268361).

Almost surely, 2^16868944 is an apocalyptic number.

16868944 is the 3354-th centered triangular number.

It is an amenable number.

16868944 is a deficient number, since it is larger than the sum of its proper divisors (15814666).

16868944 is a wasteful number, since it uses less digits than its factorization.

16868944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054317 (or 1054311 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 16868944 is about 4107.1820022979. The cubic root of 16868944 is about 256.4657050286.

The spelling of 16868944 in words is "sixteen million, eight hundred sixty-eight thousand, nine hundred forty-four".