203740730 has 8 divisors (see below), whose sum is σ = 366733332. Its totient is φ = 81496288.

The previous prime is 203740727. The next prime is 203740741. The reversal of 203740730 is 37047302.

It can be written as a sum of positive squares in 2 ways, for example, as 203718529 + 22201 = 14273^2 + 149^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 203740730.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10187027 + ... + 10187046.

Almost surely, 2^203740730 is an apocalyptic number.

203740730 is a deficient number, since it is larger than the sum of its proper divisors (162992602).

203740730 is a wasteful number, since it uses less digits than its factorization.

203740730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20374080.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 203740730 is about 14273.7777059894. Note that the first 4 decimals coincide. The cubic root of 203740730 is about 588.4270368040.

The spelling of 203740730 in words is "two hundred three million, seven hundred forty thousand, seven hundred thirty".