227981642 has 32 divisors (see below), whose sum is σ = 405380352. Its totient is φ = 94120704.

The previous prime is 227981641. The next prime is 227981647. The reversal of 227981642 is 246189722.

It is a self number, because there is not a number n which added to its sum of digits gives 227981642.

It is not an unprimeable number, because it can be changed into a prime (227981641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51218 + ... + 55490.

It is an arithmetic number, because the mean of its divisors is an integer number (12668136).

Almost surely, 2^227981642 is an apocalyptic number.

227981642 is a deficient number, since it is larger than the sum of its proper divisors (177398710).

227981642 is a wasteful number, since it uses less digits than its factorization.

227981642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422.

The product of its digits is 96768, while the sum is 41.

The square root of 227981642 is about 15099.0609641792. The cubic root of 227981642 is about 610.8950776251.

The spelling of 227981642 in words is "two hundred twenty-seven million, nine hundred eighty-one thousand, six hundred forty-two".