16648040 has 16 divisors (see below), whose sum is σ = 37458180. Its totient is φ = 6659200.

The previous prime is 16648031. The next prime is 16648043. The reversal of 16648040 is 4084661.

It can be written as a sum of positive squares in 2 ways, for example, as 16630084 + 17956 = 4078^2 + 134^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16647994 and 16648012.

It is not an unprimeable number, because it can be changed into a prime (16648043) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 208061 + ... + 208140.

Almost surely, 2^16648040 is an apocalyptic number.

16648040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16648040 is an abundant number, since it is smaller than the sum of its proper divisors (20810140).

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

16648040 is a wasteful number, since it uses less digits than its factorization.

16648040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416212 (or 416208 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 16648040 is about 4080.2009754423. The cubic root of 16648040 is about 255.3412833903.

The spelling of 16648040 in words is "sixteen million, six hundred forty-eight thousand, forty".