20305026 has 32 divisors (see below), whose sum is σ = 51569280. Its totient is φ = 5801328.

The previous prime is 20305013. The next prime is 20305039. The reversal of 20305026 is 62050302.

It is an interprime number because it is at equal distance from previous prime (20305013) and next prime (20305039).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 15 ways as a sum of consecutive naturals, for example, 26481 + ... + 27236.

It is an arithmetic number, because the mean of its divisors is an integer number (1611540).

Almost surely, 2^20305026 is an apocalyptic number.

20305026 is an abundant number, since it is smaller than the sum of its proper divisors (31264254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20305026 is a wasteful number, since it uses less digits than its factorization.

20305026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53735 (or 53729 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20305026 is about 4506.1098521896. The cubic root of 20305026 is about 272.8147517557.

Adding to 20305026 its reverse (62050302), we get a palindrome (82355328).

It can be divided in two parts, 2030 and 5026, that added together give a square (7056 = 84²).

The spelling of 20305026 in words is "twenty million, three hundred five thousand, twenty-six".