16791840 has 288 divisors, whose sum is σ = 66407040. Its totient is φ = 3953664.

The previous prime is 16791833. The next prime is 16791847. The reversal of 16791840 is 4819761.

It is an interprime number because it is at equal distance from previous prime (16791833) and next prime (16791847).

It is a tau number, because it is divible by the number of its divisors (288).

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

It is a junction number, because it is equal to n+sod(n) for n = 16791795 and 16791804.

It is not an unprimeable number, because it can be changed into a prime (16791847) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 730069 + ... + 730091.

It is an arithmetic number, because the mean of its divisors is an integer number (230580).

Almost surely, 2^16791840 is an apocalyptic number.

16791840 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 16791840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33203520).

16791840 is an abundant number, since it is smaller than the sum of its proper divisors (49615200).

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

16791840 is a wasteful number, since it uses less digits than its factorization.

16791840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 16791840 is about 4097.7847674079. The cubic root of 16791840 is about 256.0743599091.

The spelling of 16791840 in words is "sixteen million, seven hundred ninety-one thousand, eight hundred forty".