16845480 has 96 divisors (see below), whose sum is σ = 55584360. Its totient is φ = 4423680.

The previous prime is 16845463. The next prime is 16845481. The reversal of 16845480 is 8454861.

It can be written as a sum of positive squares in 4 ways, for example, as 16208676 + 636804 = 4026^2 + 798^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16845481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25960 + ... + 26600.

Almost surely, 2^16845480 is an apocalyptic number.

16845480 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 16845480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27792180).

16845480 is an abundant number, since it is smaller than the sum of its proper divisors (38738880).

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

16845480 is a wasteful number, since it uses less digits than its factorization.

16845480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 16845480 is about 4104.3245485707. The cubic root of 16845480 is about 256.3467388070.

The spelling of 16845480 in words is "sixteen million, eight hundred forty-five thousand, four hundred eighty".