16391046 has 16 divisors (see below), whose sum is σ = 37465344. Its totient is φ = 4683144.

The previous prime is 16391029. The next prime is 16391057. The reversal of 16391046 is 64019361.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195090 + ... + 195173.

It is an arithmetic number, because the mean of its divisors is an integer number (2341584).

Almost surely, 2^16391046 is an apocalyptic number.

16391046 is an abundant number, since it is smaller than the sum of its proper divisors (21074298).

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

16391046 is a wasteful number, since it uses less digits than its factorization.

16391046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390275.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 16391046 is about 4048.5856789748. The cubic root of 16391046 is about 254.0205720416.

The spelling of 16391046 in words is "sixteen million, three hundred ninety-one thousand, forty-six".