16291368 has 80 divisors (see below), whose sum is σ = 47160960. Its totient is φ = 5248800.

The previous prime is 16291357. The next prime is 16291381. The reversal of 16291368 is 86319261.

16291368 is a `hidden beast` number, since 1 + 6 + 291 + 368 = 666.

It is a super-2 number, since 2×16291368² = 530817342622848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19683 + ... + 20493.

It is an arithmetic number, because the mean of its divisors is an integer number (589512).

Almost surely, 2^16291368 is an apocalyptic number.

16291368 is a gapful number since it is divisible by the number (18) 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 16291368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23580480).

16291368 is an abundant number, since it is smaller than the sum of its proper divisors (30869592).

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

16291368 is a wasteful number, since it uses less digits than its factorization.

16291368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860 (or 847 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 16291368 is about 4036.2566816297. The cubic root of 16291368 is about 253.5046040969.

The spelling of 16291368 in words is "sixteen million, two hundred ninety-one thousand, three hundred sixty-eight".