227991470 has 32 divisors (see below), whose sum is σ = 469568448. Its totient is φ = 78075648.

The previous prime is 227991451. The next prime is 227991473. The reversal of 227991470 is 74199722.

It is a super-2 number, since 2×227991470² = 103960220785521800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227991473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85274 + ... + 87906.

It is an arithmetic number, because the mean of its divisors is an integer number (14674014).

Almost surely, 2^227991470 is an apocalyptic number.

227991470 is an abundant number, since it is smaller than the sum of its proper divisors (241576978).

227991470 is a wasteful number, since it uses less digits than its factorization.

227991470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 227991470 is about 15099.3864113745. The cubic root of 227991470 is about 610.9038558034.

The spelling of 227991470 in words is "two hundred twenty-seven million, nine hundred ninety-one thousand, four hundred seventy".