16864452 has 72 divisors (see below), whose sum is σ = 47803392. Its totient is φ = 4968000.

The previous prime is 16864447. The next prime is 16864481. The reversal of 16864452 is 25446861.

16864452 is a `hidden beast` number, since 1 + 6 + 8 + 644 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14077 + ... + 15227.

It is an arithmetic number, because the mean of its divisors is an integer number (663936).

Almost surely, 2^16864452 is an apocalyptic number.

16864452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16864452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23901696).

16864452 is an abundant number, since it is smaller than the sum of its proper divisors (30938940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16864452 is a wasteful number, since it uses less digits than its factorization.

16864452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1204 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 16864452 is about 4106.6351189264. The cubic root of 16864452 is about 256.4429384144.

It can be divided in two parts, 168 and 64452, that added together give a triangular number (64620 = T₃₅₉).

The spelling of 16864452 in words is "sixteen million, eight hundred sixty-four thousand, four hundred fifty-two".