16349340 has 144 divisors (see below), whose sum is σ = 54698112. Its totient is φ = 3636864.

The previous prime is 16349339. The next prime is 16349351. The reversal of 16349340 is 4394361.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 16349298 and 16349307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 196939 + ... + 197021.

It is an arithmetic number, because the mean of its divisors is an integer number (379848).

Almost surely, 2^16349340 is an apocalyptic number.

16349340 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 16349340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27349056).

16349340 is an abundant number, since it is smaller than the sum of its proper divisors (38348772).

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

16349340 is a wasteful number, since it uses less digits than its factorization.

16349340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 16349340 is about 4043.4317108120. The cubic root of 16349340 is about 253.8049425222.

The spelling of 16349340 in words is "sixteen million, three hundred forty-nine thousand, three hundred forty".