217073196 has 60 divisors (see below), whose sum is σ = 573405448. Its totient is φ = 71601408.

The previous prime is 217073189. The next prime is 217073209. The reversal of 217073196 is 691370712.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 217073196.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 27975 + ... + 34881.

Almost surely, 2^217073196 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 217073196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286702724).

217073196 is an abundant number, since it is smaller than the sum of its proper divisors (356332252).

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

217073196 is a wasteful number, since it uses less digits than its factorization.

217073196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7020 (or 7009 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 217073196 is about 14733.4040873113. The cubic root of 217073196 is about 600.9920587949.

The spelling of 217073196 in words is "two hundred seventeen million, seventy-three thousand, one hundred ninety-six".