20330212730 has 32 divisors (see below), whose sum is σ = 36689636880. Its totient is φ = 8110950400.

The previous prime is 20330212711. The next prime is 20330212753. The reversal of 20330212730 is 3721203302.

It can be written as a sum of positive squares in 8 ways, for example, as 15193767169 + 5136445561 = 123263^2 + 71669^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20330212696 and 20330212705.

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, 11895116 + ... + 11896824.

Almost surely, 2^20330212730 is an apocalyptic number.

20330212730 is a deficient number, since it is larger than the sum of its proper divisors (16359424150).

20330212730 is a wasteful number, since it uses less digits than its factorization.

20330212730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4114.

The product of its (nonzero) digits is 1512, while the sum is 23.

The spelling of 20330212730 in words is "twenty billion, three hundred thirty million, two hundred twelve thousand, seven hundred thirty".