20365930 has 32 divisors (see below), whose sum is σ = 40452048. Its totient is φ = 7334400.

The previous prime is 20365901. The next prime is 20365957. The reversal of 20365930 is 3956302.

It can be written as a sum of positive squares in 8 ways, for example, as 4133089 + 16232841 = 2033^2 + 4029^2 .

It is a super-2 number, since 2×20365930² = 829542209529800, which contains 22 as substring.

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, 3420 + ... + 7240.

Almost surely, 2^20365930 is an apocalyptic number.

20365930 is a deficient number, since it is larger than the sum of its proper divisors (20086118).

20365930 is a wasteful number, since it uses less digits than its factorization.

20365930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3882.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 20365930 is about 4512.8627278037. The cubic root of 20365930 is about 273.0872446315.

The spelling of 20365930 in words is "twenty million, three hundred sixty-five thousand, nine hundred thirty".