16304880 has 80 divisors (see below), whose sum is σ = 51809184. Its totient is φ = 4239360.

The previous prime is 16304863. The next prime is 16304891. The reversal of 16304880 is 8840361.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×16304880² = 531698223628800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 9012 + ... + 10668.

Almost surely, 2^16304880 is an apocalyptic number.

16304880 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 16304880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25904592).

16304880 is an abundant number, since it is smaller than the sum of its proper divisors (35504304).

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

16304880 is a wasteful number, since it uses less digits than its factorization.

16304880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714 (or 1708 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 16304880 is about 4037.9301628433. The cubic root of 16304880 is about 253.5746699881.

The spelling of 16304880 in words is "sixteen million, three hundred four thousand, eight hundred eighty".