730266778 has 4 divisors (see below), whose sum is σ = 1095400170. Its totient is φ = 365133388.

The previous prime is 730266769. The next prime is 730266781. The reversal of 730266778 is 877662037.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 624650049 + 105616729 = 24993^2 + 10277^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182566693 + ... + 182566696.

Almost surely, 2^730266778 is an apocalyptic number.

730266778 is a deficient number, since it is larger than the sum of its proper divisors (365133392).

730266778 is a wasteful number, since it uses less digits than its factorization.

730266778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365133391.

The product of its (nonzero) digits is 592704, while the sum is 46.

The square root of 730266778 is about 27023.4486696276. The cubic root of 730266778 is about 900.5210061525.

The spelling of 730266778 in words is "seven hundred thirty million, two hundred sixty-six thousand, seven hundred seventy-eight".