16328628 has 72 divisors (see below), whose sum is σ = 43479072. Its totient is φ = 5357664.

The previous prime is 16328617. The next prime is 16328633. The reversal of 16328628 is 82682361.

16328628 is a `hidden beast` number, since 1 + 6 + 3 + 28 + 628 = 666.

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 = 16328592 and 16328601.

It is a congruent number.

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, 103926 + ... + 104082.

It is an arithmetic number, because the mean of its divisors is an integer number (603876).

Almost surely, 2^16328628 is an apocalyptic number.

16328628 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 16328628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21739536).

16328628 is an abundant number, since it is smaller than the sum of its proper divisors (27150444).

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

16328628 is a wasteful number, since it uses less digits than its factorization.

16328628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 269 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 16328628 is about 4040.8697083672. The cubic root of 16328628 is about 253.6977204696.

The spelling of 16328628 in words is "sixteen million, three hundred twenty-eight thousand, six hundred twenty-eight".