16859040 has 192 divisors, whose sum is σ = 60383232. Its totient is φ = 3916800.

The previous prime is 16859033. The next prime is 16859047. The reversal of 16859040 is 4095861.

It is an interprime number because it is at equal distance from previous prime (16859033) and next prime (16859047).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 16858992 and 16859010.

It is not an unprimeable number, because it can be changed into a prime (16859047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163629 + ... + 163731.

It is an arithmetic number, because the mean of its divisors is an integer number (314496).

Almost surely, 2^16859040 is an apocalyptic number.

16859040 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 16859040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30191616).

16859040 is an abundant number, since it is smaller than the sum of its proper divisors (43524192).

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

16859040 is a wasteful number, since it uses less digits than its factorization.

16859040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 16859040 is about 4105.9761324197. The cubic root of 16859040 is about 256.4155036328.

The spelling of 16859040 in words is "sixteen million, eight hundred fifty-nine thousand, forty".