218029950 has 72 divisors (see below), whose sum is σ = 587603016. Its totient is φ = 57960000.

The previous prime is 218029919. The next prime is 218029951. The reversal of 218029950 is 59920812.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218029951) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 206925 + ... + 207975.

It is an arithmetic number, because the mean of its divisors is an integer number (8161153).

Almost surely, 2^218029950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218029950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293801508).

218029950 is an abundant number, since it is smaller than the sum of its proper divisors (369573066).

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

218029950 is a wasteful number, since it uses less digits than its factorization.

218029950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530 (or 1522 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 218029950 is about 14765.8372603791. The cubic root of 218029950 is about 601.8737258281.

The spelling of 218029950 in words is "two hundred eighteen million, twenty-nine thousand, nine hundred fifty".