1033243220 has 12 divisors (see below), whose sum is σ = 2169810804. Its totient is φ = 413297280.

The previous prime is 1033243213. The next prime is 1033243249. The reversal of 1033243220 is 223423301.

It can be written as a sum of positive squares in 2 ways, for example, as 684450244 + 348792976 = 26162^2 + 18676^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 51662161 = 1033243220 / (1 + 0 + 3 + 3 + 2 + 4 + 3 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1033243192 and 1033243201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25831061 + ... + 25831100.

It is an arithmetic number, because the mean of its divisors is an integer number (180817567).

Almost surely, 2^1033243220 is an apocalyptic number.

1033243220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1033243220 is an abundant number, since it is smaller than the sum of its proper divisors (1136567584).

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

1033243220 is a wasteful number, since it uses less digits than its factorization.

1033243220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51662170 (or 51662168 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 1033243220 is about 32144.1008584779. The cubic root of 1033243220 is about 1010.9605018285.

Adding to 1033243220 its reverse (223423301), we get a palindrome (1256666521).

The spelling of 1033243220 in words is "one billion, thirty-three million, two hundred forty-three thousand, two hundred twenty".