1020223556 has 24 divisors (see below), whose sum is σ = 1949074176. Its totient is φ = 463410720.

The previous prime is 1020223517. The next prime is 1020223573. The reversal of 1020223556 is 6553220201.

It is a super-2 number, since 2×1020223556² = 2081712208434570272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61550 + ... + 76346.

It is an arithmetic number, because the mean of its divisors is an integer number (81211424).

Almost surely, 2^1020223556 is an apocalyptic number.

It is an amenable number.

1020223556 is a deficient number, since it is larger than the sum of its proper divisors (928850620).

1020223556 is a wasteful number, since it uses less digits than its factorization.

1020223556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16379 (or 16377 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1020223556 is about 31940.9385585333. The cubic root of 1020223556 is about 1006.6962455431.

Adding to 1020223556 its reverse (6553220201), we get a palindrome (7573443757).

The spelling of 1020223556 in words is "one billion, twenty million, two hundred twenty-three thousand, five hundred fifty-six".