16648380 has 144 divisors (see below), whose sum is σ = 58828224. Its totient is φ = 3732480.

The previous prime is 16648369. The next prime is 16648391. The reversal of 16648380 is 8384661.

It is a happy number.

16648380 is a `hidden beast` number, since 1 + 6 + 648 + 3 + 8 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (16648369) and next prime (16648391).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91890 + ... + 92070.

Almost surely, 2^16648380 is an apocalyptic number.

16648380 is a gapful number since it is divisible by the number (10) 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 16648380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29414112).

16648380 is an abundant number, since it is smaller than the sum of its proper divisors (42179844).

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

16648380 is a wasteful number, since it uses less digits than its factorization.

16648380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 271 counting only the distinct ones).

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

The square root of 16648380 is about 4080.2426398439. The cubic root of 16648380 is about 255.3430216419.

The spelling of 16648380 in words is "sixteen million, six hundred forty-eight thousand, three hundred eighty".