16104781 has 12 divisors (see below), whose sum is σ = 20437920. Its totient is φ = 12548760.

The previous prime is 16104733. The next prime is 16104787. The reversal of 16104781 is 18740161.

It is not a de Polignac number, because 16104781 - 2⁷ = 16104653 is a prime.

It is a super-2 number, since 2×16104781² = 518727942115922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16104787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14401 + ... + 15478.

It is an arithmetic number, because the mean of its divisors is an integer number (1703160).

Almost surely, 2^16104781 is an apocalyptic number.

16104781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16104781 is a deficient number, since it is larger than the sum of its proper divisors (4333139).

16104781 is a wasteful number, since it uses less digits than its factorization.

16104781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29904 (or 29897 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 16104781 is about 4013.0762514560. The cubic root of 16104781 is about 252.5330793508.

The spelling of 16104781 in words is "sixteen million, one hundred four thousand, seven hundred eighty-one".