20300156 has 24 divisors (see below), whose sum is σ = 36261120. Its totient is φ = 9942192.

The previous prime is 20300143. The next prime is 20300177. The reversal of 20300156 is 65100302.

It is a congruent number.

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, 71591 + ... + 71873.

It is an arithmetic number, because the mean of its divisors is an integer number (1510880).

Almost surely, 2^20300156 is an apocalyptic number.

It is an amenable number.

20300156 is a deficient number, since it is larger than the sum of its proper divisors (15960964).

20300156 is a wasteful number, since it uses less digits than its factorization.

20300156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 20300156 is about 4505.5694423680. The cubic root of 20300156 is about 272.7929391911.

Adding to 20300156 its reverse (65100302), we get a palindrome (85400458).

The spelling of 20300156 in words is "twenty million, three hundred thousand, one hundred fifty-six".