16768728 has 64 divisors (see below), whose sum is σ = 48204000. Its totient is φ = 5394816.

The previous prime is 16768691. The next prime is 16768751. The reversal of 16768728 is 82786761.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4926 + ... + 7602.

Almost surely, 2^16768728 is an apocalyptic number.

16768728 is a gapful number since it is divisible by the number (18) 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 16768728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24102000).

16768728 is an abundant number, since it is smaller than the sum of its proper divisors (31435272).

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

16768728 is a wasteful number, since it uses less digits than its factorization.

16768728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721 (or 2711 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 16768728 is about 4094.9637361032. The cubic root of 16768728 is about 255.9568205168.

It can be divided in two parts, 1676 and 8728, that added together give a square (10404 = 102²).

The spelling of 16768728 in words is "sixteen million, seven hundred sixty-eight thousand, seven hundred twenty-eight".