20320023210 has 64 divisors (see below), whose sum is σ = 51605268480. Its totient is φ = 5110064960.

The previous prime is 20320023167. The next prime is 20320023221. The reversal of 20320023210 is 1232002302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20320023210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158400 + ... + 256379.

It is an arithmetic number, because the mean of its divisors is an integer number (806332320).

Almost surely, 2^20320023210 is an apocalyptic number.

20320023210 is an abundant number, since it is smaller than the sum of its proper divisors (31285245270).

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

20320023210 is a wasteful number, since it uses less digits than its factorization.

20320023210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414883.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20320023210 its reverse (1232002302), we get a palindrome (21552025512).

The spelling of 20320023210 in words is "twenty billion, three hundred twenty million, twenty-three thousand, two hundred ten".