16728784490 has 32 divisors (see below), whose sum is σ = 32856430464. Its totient is φ = 6081864640.

The previous prime is 16728784477. The next prime is 16728784549. The reversal of 16728784490 is 9448782761.

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, 588587 + ... + 616353.

It is an arithmetic number, because the mean of its divisors is an integer number (1026763452).

Almost surely, 2^16728784490 is an apocalyptic number.

16728784490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16728784490 is a deficient number, since it is larger than the sum of its proper divisors (16127645974).

16728784490 is a wasteful number, since it uses less digits than its factorization.

16728784490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33262.

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 16728784490 in words is "sixteen billion, seven hundred twenty-eight million, seven hundred eighty-four thousand, four hundred ninety".