221714828 has 12 divisors (see below), whose sum is σ = 388346112. Its totient is φ = 110758800.

The previous prime is 221714789. The next prime is 221714873. The reversal of 221714828 is 828417122.

221714828 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19475 + ... + 28682.

It is an arithmetic number, because the mean of its divisors is an integer number (32362176).

Almost surely, 2^221714828 is an apocalyptic number.

It is an amenable number.

221714828 is a deficient number, since it is larger than the sum of its proper divisors (166631284).

221714828 is a wasteful number, since it uses less digits than its factorization.

221714828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49312 (or 49310 counting only the distinct ones).

The product of its digits is 14336, while the sum is 35.

The square root of 221714828 is about 14890.0916048223. The cubic root of 221714828 is about 605.2455147249.

The spelling of 221714828 in words is "two hundred twenty-one million, seven hundred fourteen thousand, eight hundred twenty-eight".