1040223220 has 24 divisors (see below), whose sum is σ = 2185077384. Its totient is φ = 415973376.

The previous prime is 1040223211. The next prime is 1040223221. The reversal of 1040223220 is 223220401.

It can be written as a sum of positive squares in 4 ways, for example, as 319622884 + 720600336 = 17878^2 + 26844^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1040223194 and 1040223203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040223221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127092 + ... + 135028.

It is an arithmetic number, because the mean of its divisors is an integer number (91044891).

Almost surely, 2^1040223220 is an apocalyptic number.

1040223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040223220 is an abundant number, since it is smaller than the sum of its proper divisors (1144854164).

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

1040223220 is a wasteful number, since it uses less digits than its factorization.

1040223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14499 (or 14497 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1040223220 is about 32252.4916866899. The cubic root of 1040223220 is about 1013.2318849944.

Adding to 1040223220 its reverse (223220401), we get a palindrome (1263443621).

The spelling of 1040223220 in words is "one billion, forty million, two hundred twenty-three thousand, two hundred twenty".