16779340 has 36 divisors (see below), whose sum is σ = 37444176. Its totient is φ = 6314752.

The previous prime is 16779317. The next prime is 16779341. The reversal of 16779340 is 4397761.

It is a self number, because there is not a number n which added to its sum of digits gives 16779340.

It is not an unprimeable number, because it can be changed into a prime (16779341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4329 + ... + 7231.

It is an arithmetic number, because the mean of its divisors is an integer number (1040116).

Almost surely, 2^16779340 is an apocalyptic number.

16779340 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 16779340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18722088).

16779340 is an abundant number, since it is smaller than the sum of its proper divisors (20664836).

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

16779340 is a wasteful number, since it uses less digits than its factorization.

16779340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946 (or 2927 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 16779340 is about 4096.2592691381. The cubic root of 16779340 is about 256.0108027668.

It can be divided in two parts, 167 and 79340, that added together give a cube (79507 = 43³).

The spelling of 16779340 in words is "sixteen million, seven hundred seventy-nine thousand, three hundred forty".