71842228 has 12 divisors (see below), whose sum is σ = 126002212. Its totient is φ = 35841600.

The previous prime is 71842223. The next prime is 71842237. The reversal of 71842228 is 82224817.

It can be written as a sum of positive squares in 2 ways, for example, as 42876304 + 28965924 = 6548^2 + 5382^2 .

It is a super-2 number, since 2×71842228² = 10322611448007968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 71842193 and 71842202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71842223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17823 + ... + 21478.

Almost surely, 2^71842228 is an apocalyptic number.

It is an amenable number.

71842228 is a deficient number, since it is larger than the sum of its proper divisors (54159984).

71842228 is a wasteful number, since it uses less digits than its factorization.

71842228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39762 (or 39760 counting only the distinct ones).

The product of its digits is 14336, while the sum is 34.

The square root of 71842228 is about 8475.9794714239. The cubic root of 71842228 is about 415.7126729552.

The spelling of 71842228 in words is "seventy-one million, eight hundred forty-two thousand, two hundred twenty-eight".