216830227428 has 60 divisors (see below), whose sum is σ = 566962556160. Its totient is φ = 72260738928.

The previous prime is 216830227409. The next prime is 216830227469. The reversal of 216830227428 is 824722038612.

216830227428 is a `hidden beast` number, since 216 + 8 + 3 + 0 + 2 + 2 + 7 + 428 = 666.

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, 1439053 + ... + 1582571.

It is an arithmetic number, because the mean of its divisors is an integer number (9449375936).

Almost surely, 2^216830227428 is an apocalyptic number.

It is an amenable number.

216830227428 is an abundant number, since it is smaller than the sum of its proper divisors (350132328732).

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

216830227428 is a wasteful number, since it uses less digits than its factorization.

216830227428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148198 (or 148187 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 216830227428 in words is "two hundred sixteen billion, eight hundred thirty million, two hundred twenty-seven thousand, four hundred twenty-eight".