218097036 has 60 divisors (see below), whose sum is σ = 573452880. Its totient is φ = 72277920.

The previous prime is 218097007. The next prime is 218097043. The reversal of 218097036 is 630790812.

It is a super-2 number, since 2×218097036² = 95132634223970592, which contains 22 as substring.

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

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, 56785 + ... + 60503.

It is an arithmetic number, because the mean of its divisors is an integer number (9557548).

Almost surely, 2^218097036 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 218097036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286726440).

218097036 is an abundant number, since it is smaller than the sum of its proper divisors (355355844).

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

218097036 is a wasteful number, since it uses less digits than its factorization.

218097036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3916 (or 3905 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 218097036 is about 14768.1087482453. The cubic root of 218097036 is about 601.9354500090.

The spelling of 218097036 in words is "two hundred eighteen million, ninety-seven thousand, thirty-six".