16399460 has 96 divisors (see below), whose sum is σ = 44900352. Its totient is φ = 4878720.

The previous prime is 16399433. The next prime is 16399477. The reversal of 16399460 is 6499361.

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 31 ways as a sum of consecutive naturals, for example, 35189 + ... + 35651.

It is an arithmetic number, because the mean of its divisors is an integer number (467712).

Almost surely, 2^16399460 is an apocalyptic number.

16399460 is a gapful number since it is divisible by the number (10) 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 16399460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22450176).

16399460 is an abundant number, since it is smaller than the sum of its proper divisors (28500892).

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

16399460 is a wasteful number, since it uses less digits than its factorization.

16399460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 16399460 is about 4049.6246739667. The cubic root of 16399460 is about 254.0640299856.

Subtracting from 16399460 its reverse (6499361), we obtain a palindrome (9900099).

The spelling of 16399460 in words is "sixteen million, three hundred ninety-nine thousand, four hundred sixty".