16732728 has 48 divisors (see below), whose sum is σ = 45525480. Its totient is φ = 5552064.

The previous prime is 16732697. The next prime is 16732757. The reversal of 16732728 is 82723761.

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

It is a junction number, because it is equal to n+sod(n) for n = 16732692 and 16732701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21726 + ... + 22482.

It is a vampire number, since it can be written as 2271 ⋅ 7368 (with its own digits).

Almost surely, 2^16732728 is an apocalyptic number.

16732728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16732728 is an abundant number, since it is smaller than the sum of its proper divisors (28792752).

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

16732728 is a wasteful number, since it uses less digits than its factorization.

16732728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076 (or 1069 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 16732728 is about 4090.5657310450. The cubic root of 16732728 is about 255.7735220294.

The spelling of 16732728 in words is "sixteen million, seven hundred thirty-two thousand, seven hundred twenty-eight".