727231228 has 6 divisors (see below), whose sum is σ = 1272654656. Its totient is φ = 363615612.

The previous prime is 727231223. The next prime is 727231229. The reversal of 727231228 is 822132727.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 727231193 and 727231202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (727231223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90903900 + ... + 90903907.

Almost surely, 2^727231228 is an apocalyptic number.

It is an amenable number.

727231228 is a deficient number, since it is larger than the sum of its proper divisors (545423428).

727231228 is a wasteful number, since it uses less digits than its factorization.

727231228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181807811 (or 181807809 counting only the distinct ones).

The product of its digits is 18816, while the sum is 34.

The square root of 727231228 is about 26967.2250704443. The cubic root of 727231228 is about 899.2715208006.

It can be divided in two parts, 7272 and 31228, that multiplied together give a triangular number (227090016 = T₂₁₃₁₁).

The spelling of 727231228 in words is "seven hundred twenty-seven million, two hundred thirty-one thousand, two hundred twenty-eight".