20353730234 has 8 divisors (see below), whose sum is σ = 30539189268. Its totient is φ = 10174000480.

The previous prime is 20353730227. The next prime is 20353730251. The reversal of 20353730234 is 43203735302.

It can be written as a sum of positive squares in 2 ways, for example, as 19867748209 + 485982025 = 140953^2 + 22045^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 20353730234.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1423427 + ... + 1437654.

Almost surely, 2^20353730234 is an apocalyptic number.

20353730234 is a deficient number, since it is larger than the sum of its proper divisors (10185459034).

20353730234 is a wasteful number, since it uses less digits than its factorization.

20353730234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864640.

The product of its (nonzero) digits is 45360, while the sum is 32.

The spelling of 20353730234 in words is "twenty billion, three hundred fifty-three million, seven hundred thirty thousand, two hundred thirty-four".