16399002 has 16 divisors (see below), whose sum is σ = 33057792. Its totient is φ = 5423040.

The previous prime is 16398989. The next prime is 16399003. The reversal of 16399002 is 20099361.

It is not an unprimeable number, because it can be changed into a prime (16399003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9999 + ... + 11522.

It is an arithmetic number, because the mean of its divisors is an integer number (2066112).

Almost surely, 2^16399002 is an apocalyptic number.

16399002 is an abundant number, since it is smaller than the sum of its proper divisors (16658790).

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

16399002 is a wasteful number, since it uses less digits than its factorization.

16399002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21653.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 16399002 is about 4049.5681251215. The cubic root of 16399002 is about 254.0616648181.

The spelling of 16399002 in words is "sixteen million, three hundred ninety-nine thousand, two".