16404047280 has 120 divisors (see below), whose sum is σ = 55578058848. Its totient is φ = 4335679488.

The previous prime is 16404047279. The next prime is 16404047291. The reversal of 16404047280 is 8274040461.

16404047280 is a `hidden beast` number, since 1 + 640 + 4 + 0 + 4 + 7 + 2 + 8 + 0 = 666.

16404047280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19452 + ... + 182171.

Almost surely, 2^16404047280 is an apocalyptic number.

16404047280 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 16404047280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27789029424).

16404047280 is an abundant number, since it is smaller than the sum of its proper divisors (39174011568).

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

16404047280 is a wasteful number, since it uses less digits than its factorization.

16404047280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201755 (or 201746 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The spelling of 16404047280 in words is "sixteen billion, four hundred four million, forty-seven thousand, two hundred eighty".