16864768 has 20 divisors (see below), whose sum is σ = 33697620. Its totient is φ = 8432128.

The previous prime is 16864741. The next prime is 16864789. The reversal of 16864768 is 86746861.

It is a happy number.

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, 15958 + ... + 16981.

It is an arithmetic number, because the mean of its divisors is an integer number (1684881).

Almost surely, 2^16864768 is an apocalyptic number.

It is an amenable number.

16864768 is a deficient number, since it is larger than the sum of its proper divisors (16832852).

16864768 is an frugal number, since it uses more digits than its factorization.

16864768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32957 (or 32941 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 16864768 is about 4106.6735930678. The cubic root of 16864768 is about 256.4445401160. Note that the first 3 decimals are identical.

The spelling of 16864768 in words is "sixteen million, eight hundred sixty-four thousand, seven hundred sixty-eight".