1023220056 has 32 divisors (see below), whose sum is σ = 2558980800. Its totient is φ = 340949280.

The previous prime is 1023220001. The next prime is 1023220061. The reversal of 1023220056 is 6500223201.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 79735 + ... + 91673.

It is an arithmetic number, because the mean of its divisors is an integer number (79968150).

Almost surely, 2^1023220056 is an apocalyptic number.

It is an amenable number.

1023220056 is an abundant number, since it is smaller than the sum of its proper divisors (1535760744).

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

1023220056 is a wasteful number, since it uses less digits than its factorization.

1023220056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15519 (or 15515 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1023220056 is about 31987.8110535873. The cubic root of 1023220056 is about 1007.6808718283.

Adding to 1023220056 its reverse (6500223201), we get a palindrome (7523443257).

The spelling of 1023220056 in words is "one billion, twenty-three million, two hundred twenty thousand, fifty-six".