16779834 has 24 divisors (see below), whose sum is σ = 37937952. Its totient is φ = 5349960.

The previous prime is 16779823. The next prime is 16779839. The reversal of 16779834 is 43897761.

It is a self number, because there is not a number n which added to its sum of digits gives 16779834.

It is not an unprimeable number, because it can be changed into a prime (16779839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19852 + ... + 20679.

It is an arithmetic number, because the mean of its divisors is an integer number (1580748).

Almost surely, 2^16779834 is an apocalyptic number.

16779834 is an abundant number, since it is smaller than the sum of its proper divisors (21158118).

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

16779834 is a wasteful number, since it uses less digits than its factorization.

16779834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40562 (or 40559 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 16779834 is about 4096.3195676119. The cubic root of 16779834 is about 256.0133151440.

It can be divided in two parts, 1677 and 9834, that added together give a palindrome (11511).

The spelling of 16779834 in words is "sixteen million, seven hundred seventy-nine thousand, eight hundred thirty-four".