18850216 has 64 divisors (see below), whose sum is σ = 44789760. Its totient is φ = 7224000.

The previous prime is 18850199. The next prime is 18850217. The reversal of 18850216 is 61205881.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18850217) 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, 43521 + ... + 43951.

It is an arithmetic number, because the mean of its divisors is an integer number (699840).

Almost surely, 2^18850216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18850216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22394880).

18850216 is an abundant number, since it is smaller than the sum of its proper divisors (25939544).

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

18850216 is a wasteful number, since it uses less digits than its factorization.

18850216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 18850216 is about 4341.6835444330. The cubic root of 18850216 is about 266.1371143778.

The spelling of 18850216 in words is "eighteen million, eight hundred fifty thousand, two hundred sixteen".