727542730 has 32 divisors (see below), whose sum is σ = 1334677968. Its totient is φ = 285465600.

The previous prime is 727542719. The next prime is 727542763. The reversal of 727542730 is 37245727.

It is a Cunningham number, because it is equal to 26973²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1 + 727542729 = 1^2 + 26973^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 727542730.

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, 255394 + ... + 258226.

Almost surely, 2^727542730 is an apocalyptic number.

727542730 is a deficient number, since it is larger than the sum of its proper divisors (607135238).

727542730 is a wasteful number, since it uses less digits than its factorization.

727542730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322.

The product of its (nonzero) digits is 82320, while the sum is 37.

The square root of 727542730 is about 26973.0000185371. Note that the first 4 decimals coincide. The cubic root of 727542730 is about 899.3999003676.

It can be divided in two parts, 7275 and 42730, that added together give a palindrome (50005).

The spelling of 727542730 in words is "seven hundred twenty-seven million, five hundred forty-two thousand, seven hundred thirty".