1023365220 has 48 divisors (see below), whose sum is σ = 2990010240. Its totient is φ = 261031936.

The previous prime is 1023365191. The next prime is 1023365281. The reversal of 1023365220 is 225633201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369405 + ... + 372164.

It is an arithmetic number, because the mean of its divisors is an integer number (62291880).

Almost surely, 2^1023365220 is an apocalyptic number.

1023365220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023365220 is an abundant number, since it is smaller than the sum of its proper divisors (1966645020).

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

1023365220 is a wasteful number, since it uses less digits than its factorization.

1023365220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741604 (or 741602 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1023365220 is about 31990.0800249077. The cubic root of 1023365220 is about 1007.7285227281.

Adding to 1023365220 its reverse (225633201), we get a palindrome (1248998421).

The spelling of 1023365220 in words is "one billion, twenty-three million, three hundred sixty-five thousand, two hundred twenty".