20196730 has 16 divisors (see below), whose sum is σ = 36420264. Its totient is φ = 8064000.

The previous prime is 20196727. The next prime is 20196751. The reversal of 20196730 is 3769102.

It can be written as a sum of positive squares in 4 ways, for example, as 14984641 + 5212089 = 3871^2 + 2283^2 .

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 7 ways as a sum of consecutive naturals, for example, 5230 + ... + 8230.

Almost surely, 2^20196730 is an apocalyptic number.

20196730 is a deficient number, since it is larger than the sum of its proper divisors (16223534).

20196730 is a wasteful number, since it uses less digits than its factorization.

20196730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3681.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 20196730 is about 4494.0772133999. The cubic root of 20196730 is about 272.3288715970.

The spelling of 20196730 in words is "twenty million, one hundred ninety-six thousand, seven hundred thirty".