729001156 has 48 divisors (see below), whose sum is σ = 1420760880. Its totient is φ = 325140480.

The previous prime is 729001129. The next prime is 729001199. The reversal of 729001156 is 651100927.

It can be written as a sum of positive squares in 8 ways, for example, as 1156 + 729000000 = 34^2 + 27000^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230820 + ... + 233956.

It is an arithmetic number, because the mean of its divisors is an integer number (29599185).

Almost surely, 2^729001156 is an apocalyptic number.

It is an amenable number.

729001156 is a deficient number, since it is larger than the sum of its proper divisors (691759724).

729001156 is a wasteful number, since it uses less digits than its factorization.

729001156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304 (or 3302 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 729001156 is about 27000.0214073989. The cubic root of 729001156 is about 900.0004757199. Note that the first 3 decimals are identical.

It can be divided in two parts, 72900 and 1156, that multiplied together give a square (84272400 = 9180²).

The spelling of 729001156 in words is "seven hundred twenty-nine million, one thousand, one hundred fifty-six".