729778004 has 12 divisors (see below), whose sum is σ = 1280397300. Its totient is φ = 363950208.

The previous prime is 729777949. The next prime is 729778013. The reversal of 729778004 is 400877927.

It can be written as a sum of positive squares in 2 ways, for example, as 146652100 + 583125904 = 12110^2 + 24148^2 .

It is a congruent number.

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, 232949 + ... + 236060.

It is an arithmetic number, because the mean of its divisors is an integer number (106699775).

Almost surely, 2^729778004 is an apocalyptic number.

It is an amenable number.

729778004 is a deficient number, since it is larger than the sum of its proper divisors (550619296).

729778004 is a wasteful number, since it uses less digits than its factorization.

729778004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469402 (or 469400 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 729778004 is about 27014.4036395401. The cubic root of 729778004 is about 900.3200524266.

The spelling of 729778004 in words is "seven hundred twenty-nine million, seven hundred seventy-eight thousand, four".