16783040 has 56 divisors (see below), whose sum is σ = 40325040. Its totient is φ = 6652928.

The previous prime is 16783027. The next prime is 16783043. The reversal of 16783040 is 4038761.

It is a junction number, because it is equal to n+sod(n) for n = 16782994 and 16783012.

It is not an unprimeable number, because it can be changed into a prime (16783043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57134 + ... + 57426.

It is an arithmetic number, because the mean of its divisors is an integer number (720090).

Almost surely, 2^16783040 is an apocalyptic number.

16783040 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 16783040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20162520).

16783040 is an abundant number, since it is smaller than the sum of its proper divisors (23542000).

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

16783040 is a wasteful number, since it uses less digits than its factorization.

16783040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 16783040 is about 4096.7108758124. The cubic root of 16783040 is about 256.0296189688.

The spelling of 16783040 in words is "sixteen million, seven hundred eighty-three thousand, forty".