729227052 has 36 divisors (see below), whose sum is σ = 1923470640. Its totient is φ = 232506912.

The previous prime is 729227039. The next prime is 729227063. The reversal of 729227052 is 250722927.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×729227052² = 1063544186737221408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 729226998 and 729227016.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 439527 + ... + 441182.

It is an arithmetic number, because the mean of its divisors is an integer number (53429740).

Almost surely, 2^729227052 is an apocalyptic number.

It is an amenable number.

729227052 is an abundant number, since it is smaller than the sum of its proper divisors (1194243588).

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

729227052 is a wasteful number, since it uses less digits than its factorization.

729227052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880742 (or 880737 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 729227052 is about 27004.2043393246. The cubic root of 729227052 is about 900.0934273382.

Adding to 729227052 its reverse (250722927), we get a palindrome (979949979).

The spelling of 729227052 in words is "seven hundred twenty-nine million, two hundred twenty-seven thousand, fifty-two".