16840038720 has 56 divisors (see below), whose sum is σ = 53467125984. Its totient is φ = 4490676736.

The previous prime is 16840038689. The next prime is 16840038727. The reversal of 16840038720 is 2783004861.

It is a super-3 number, since 3×16840038720³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16840038727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8769894 + ... + 8771813.

Almost surely, 2^16840038720 is an apocalyptic number.

16840038720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16840038720 is an abundant number, since it is smaller than the sum of its proper divisors (36627087264).

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

16840038720 is a wasteful number, since it uses less digits than its factorization.

16840038720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17541727 (or 17541717 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 16840038720 in words is "sixteen billion, eight hundred forty million, thirty-eight thousand, seven hundred twenty".