20192930 has 16 divisors (see below), whose sum is σ = 36708984. Its totient is φ = 7996800.

The previous prime is 20192917. The next prime is 20192969. The reversal of 20192930 is 3929102.

It can be written as a sum of positive squares in 4 ways, for example, as 19882681 + 310249 = 4459^2 + 557^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20192930.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8987 + ... + 11006.

Almost surely, 2^20192930 is an apocalyptic number.

20192930 is a deficient number, since it is larger than the sum of its proper divisors (16516054).

20192930 is a wasteful number, since it uses less digits than its factorization.

20192930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20101.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 20192930 is about 4493.6544148388. The cubic root of 20192930 is about 272.3117910330.

The spelling of 20192930 in words is "twenty million, one hundred ninety-two thousand, nine hundred thirty".