218182028 has 12 divisors (see below), whose sum is σ = 382000080. Its totient is φ = 109039152.

The previous prime is 218182021. The next prime is 218182039. The reversal of 218182028 is 820281812.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 218181985 and 218182003.

It is not an unprimeable number, because it can be changed into a prime (218182021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2576 + ... + 21047.

It is an arithmetic number, because the mean of its divisors is an integer number (31833340).

Almost surely, 2^218182028 is an apocalyptic number.

It is an amenable number.

218182028 is a deficient number, since it is larger than the sum of its proper divisors (163818052).

218182028 is a wasteful number, since it uses less digits than its factorization.

218182028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25936 (or 25934 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 218182028 is about 14770.9860198972. The cubic root of 218182028 is about 602.0136308875.

The spelling of 218182028 in words is "two hundred eighteen million, one hundred eighty-two thousand, twenty-eight".