16860340 has 24 divisors (see below), whose sum is σ = 40465152. Its totient is φ = 5780640.

The previous prime is 16860329. The next prime is 16860341. The reversal of 16860340 is 4306861.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 16860299 and 16860308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16860341) 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, 60076 + ... + 60355.

It is an arithmetic number, because the mean of its divisors is an integer number (1686048).

Almost surely, 2^16860340 is an apocalyptic number.

16860340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16860340 is an abundant number, since it is smaller than the sum of its proper divisors (23604812).

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

16860340 is a wasteful number, since it uses less digits than its factorization.

16860340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120447 (or 120445 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 16860340 is about 4106.1344352079. The cubic root of 16860340 is about 256.4220941936.

The spelling of 16860340 in words is "sixteen million, eight hundred sixty thousand, three hundred forty".