16420860 has 96 divisors (see below), whose sum is σ = 52254720. Its totient is φ = 4279104.

The previous prime is 16420853. The next prime is 16420867. The reversal of 16420860 is 6802461.

It is an interprime number because it is at equal distance from previous prime (16420853) and next prime (16420867).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16420867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25057 + ... + 25703.

It is an arithmetic number, because the mean of its divisors is an integer number (544320).

Almost surely, 2^16420860 is an apocalyptic number.

16420860 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 16420860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26127360).

16420860 is an abundant number, since it is smaller than the sum of its proper divisors (35833860).

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

16420860 is a wasteful number, since it uses less digits than its factorization.

16420860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 704 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 16420860 is about 4052.2660327279. The cubic root of 16420860 is about 254.1744931150.

The spelling of 16420860 in words is "sixteen million, four hundred twenty thousand, eight hundred sixty".