16864312 has 32 divisors (see below), whose sum is σ = 32990400. Its totient is φ = 8072064.

The previous prime is 16864303. The next prime is 16864319. The reversal of 16864312 is 21346861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16864319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36193 + ... + 36655.

It is an arithmetic number, because the mean of its divisors is an integer number (1030950).

Almost surely, 2^16864312 is an apocalyptic number.

It is an amenable number.

16864312 is a deficient number, since it is larger than the sum of its proper divisors (16126088).

16864312 is a wasteful number, since it uses less digits than its factorization.

16864312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655 (or 651 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 16864312 is about 4106.6180733056. The cubic root of 16864312 is about 256.4422287933.

The spelling of 16864312 in words is "sixteen million, eight hundred sixty-four thousand, three hundred twelve".