729323642 has 8 divisors (see below), whose sum is σ = 1095261600. Its totient is φ = 364236444.

The previous prime is 729323611. The next prime is 729323653. The reversal of 729323642 is 246323927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 729323596 and 729323605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210542 + ... + 213977.

It is an arithmetic number, because the mean of its divisors is an integer number (136907700).

Almost surely, 2^729323642 is an apocalyptic number.

729323642 is a deficient number, since it is larger than the sum of its proper divisors (365937958).

729323642 is a wasteful number, since it uses less digits than its factorization.

729323642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425380.

The product of its digits is 108864, while the sum is 38.

The square root of 729323642 is about 27005.9927053238. The cubic root of 729323642 is about 900.1331663036.

The spelling of 729323642 in words is "seven hundred twenty-nine million, three hundred twenty-three thousand, six hundred forty-two".