16788380 has 72 divisors (see below), whose sum is σ = 42211008. Its totient is φ = 5588352.

The previous prime is 16788341. The next prime is 16788383. The reversal of 16788380 is 8388761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16788383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36029 + ... + 36491.

It is an arithmetic number, because the mean of its divisors is an integer number (586264).

Almost surely, 2^16788380 is an apocalyptic number.

16788380 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 16788380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21105504).

16788380 is an abundant number, since it is smaller than the sum of its proper divisors (25422628).

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

16788380 is a wasteful number, since it uses less digits than its factorization.

16788380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 16788380 is about 4097.3625663346. The cubic root of 16788380 is about 256.0567704500.

The spelling of 16788380 in words is "sixteen million, seven hundred eighty-eight thousand, three hundred eighty".