221734382 has 8 divisors (see below), whose sum is σ = 343330752. Its totient is φ = 107290800.

The previous prime is 221734367. The next prime is 221734393. The reversal of 221734382 is 283437122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×221734382² = 98332272321843848, which contains 22 as substring.

It is a congruent number.

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, 1788119 + ... + 1788242.

It is an arithmetic number, because the mean of its divisors is an integer number (42916344).

Almost surely, 2^221734382 is an apocalyptic number.

221734382 is a deficient number, since it is larger than the sum of its proper divisors (121596370).

221734382 is a wasteful number, since it uses less digits than its factorization.

221734382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576394.

The product of its digits is 16128, while the sum is 32.

The square root of 221734382 is about 14890.7482014840. The cubic root of 221734382 is about 605.2633072845.

The spelling of 221734382 in words is "two hundred twenty-one million, seven hundred thirty-four thousand, three hundred eighty-two".