16850020 has 48 divisors (see below), whose sum is σ = 38900736. Its totient is φ = 6080000.

The previous prime is 16850003. The next prime is 16850021. The reversal of 16850020 is 2005861.

It is a happy number.

It is a super-3 number, since 3×16850020³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 16849973 and 16850000.

It is not an unprimeable number, because it can be changed into a prime (16850021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41820 + ... + 42220.

It is an arithmetic number, because the mean of its divisors is an integer number (810432).

Almost surely, 2^16850020 is an apocalyptic number.

16850020 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 16850020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19450368).

16850020 is an abundant number, since it is smaller than the sum of its proper divisors (22050716).

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

16850020 is a wasteful number, since it uses less digits than its factorization.

16850020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 16850020 is about 4104.8775864817. The cubic root of 16850020 is about 256.3697659465.

Adding to 16850020 its reverse (2005861), we get a palindrome (18855881).

The spelling of 16850020 in words is "sixteen million, eight hundred fifty thousand, twenty".