218135832 has 16 divisors (see below), whose sum is σ = 545339640. Its totient is φ = 72711936.

The previous prime is 218135807. The next prime is 218135833. The reversal of 218135832 is 238531812.

It is a junction number, because it is equal to n+sod(n) for n = 218135793 and 218135802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218135833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4544473 + ... + 4544520.

Almost surely, 2^218135832 is an apocalyptic number.

It is an amenable number.

218135832 is an abundant number, since it is smaller than the sum of its proper divisors (327203808).

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

218135832 is a wasteful number, since it uses less digits than its factorization.

218135832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9089002 (or 9088998 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 218135832 is about 14769.4221958748. The cubic root of 218135832 is about 601.9711394795.

The spelling of 218135832 in words is "two hundred eighteen million, one hundred thirty-five thousand, eight hundred thirty-two".