16389648 has 80 divisors (see below), whose sum is σ = 51336000. Its totient is φ = 4965120.

The previous prime is 16389643. The next prime is 16389673. The reversal of 16389648 is 84698361.

16389648 is a `hidden beast` number, since 1 + 638 + 9 + 6 + 4 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (16389641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3028 + ... + 6476.

It is an arithmetic number, because the mean of its divisors is an integer number (641700).

Almost surely, 2^16389648 is an apocalyptic number.

16389648 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 16389648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25668000).

16389648 is an abundant number, since it is smaller than the sum of its proper divisors (34946352).

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

16389648 is a wasteful number, since it uses less digits than its factorization.

16389648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3477 (or 3465 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 16389648 is about 4048.4130224077. The cubic root of 16389648 is about 254.0133499917.

The spelling of 16389648 in words is "sixteen million, three hundred eighty-nine thousand, six hundred forty-eight".