16308081 has 16 divisors (see below), whose sum is σ = 25211520. Its totient is φ = 10398960.

The previous prime is 16308073. The next prime is 16308091. The reversal of 16308081 is 18080361.

It is not a de Polignac number, because 16308081 - 2³ = 16308073 is a prime.

It is a super-2 number, since 2×16308081² = 531907011805122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (16308011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12510 + ... + 13751.

It is an arithmetic number, because the mean of its divisors is an integer number (1575720).

Almost surely, 2^16308081 is an apocalyptic number.

It is an amenable number.

16308081 is a deficient number, since it is larger than the sum of its proper divisors (8903439).

16308081 is a wasteful number, since it uses less digits than its factorization.

16308081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26293 (or 26287 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 16308081 is about 4038.3265098305. The cubic root of 16308081 is about 253.5912629633.

The spelling of 16308081 in words is "sixteen million, three hundred eight thousand, eighty-one".