221034782 has 16 divisors (see below), whose sum is σ = 351449280. Its totient is φ = 103899648.

The previous prime is 221034769. The next prime is 221034791. The reversal of 221034782 is 287430122.

221034782 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32198 + ... + 38454.

It is an arithmetic number, because the mean of its divisors is an integer number (21965580).

Almost surely, 2^221034782 is an apocalyptic number.

221034782 is a deficient number, since it is larger than the sum of its proper divisors (130414498).

221034782 is a wasteful number, since it uses less digits than its factorization.

221034782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7315.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 221034782 is about 14867.2385465493. The cubic root of 221034782 is about 604.6260758877.

The spelling of 221034782 in words is "two hundred twenty-one million, thirty-four thousand, seven hundred eighty-two".