16823040 has 144 divisors (see below), whose sum is σ = 58033248. Its totient is φ = 4128768.

The previous prime is 16823011. The next prime is 16823063. The reversal of 16823040 is 4032861.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 16823040.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49752 + ... + 50088.

Almost surely, 2^16823040 is an apocalyptic number.

16823040 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 16823040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29016624).

16823040 is an abundant number, since it is smaller than the sum of its proper divisors (41210208).

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

16823040 is a wasteful number, since it uses less digits than its factorization.

16823040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 16823040 is about 4101.5899356225. The cubic root of 16823040 is about 256.2328610389.

The spelling of 16823040 in words is "sixteen million, eight hundred twenty-three thousand, forty".