727472228 has 72 divisors (see below), whose sum is σ = 1650710880. Its totient is φ = 277966080.

The previous prime is 727472227. The next prime is 727472231. The reversal of 727472228 is 822274727.

It is a super-2 number, since 2×727472228² = 1058431685022567968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (727472227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57563 + ... + 69053.

It is an arithmetic number, because the mean of its divisors is an integer number (22926540).

Almost surely, 2^727472228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 727472228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (825355440).

727472228 is an abundant number, since it is smaller than the sum of its proper divisors (923238652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

727472228 is a wasteful number, since it uses less digits than its factorization.

727472228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11545 (or 11536 counting only the distinct ones).

The product of its digits is 175616, while the sum is 41.

The square root of 727472228 is about 26971.6930873833. The cubic root of 727472228 is about 899.3708475310.

The spelling of 727472228 in words is "seven hundred twenty-seven million, four hundred seventy-two thousand, two hundred twenty-eight".