902223220 has 24 divisors (see below), whose sum is σ = 1895329800. Its totient is φ = 360763392.

The previous prime is 902223191. The next prime is 902223239. The reversal of 902223220 is 22322209.

It can be written as a sum of positive squares in 4 ways, for example, as 58553104 + 843670116 = 7652^2 + 29046^2 .

It is a junction number, because it is equal to n+sod(n) for n = 902223191 and 902223200.

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, 69396 + ... + 81364.

It is an arithmetic number, because the mean of its divisors is an integer number (78972075).

Almost surely, 2^902223220 is an apocalyptic number.

It is an amenable number.

902223220 is an abundant number, since it is smaller than the sum of its proper divisors (993106580).

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

902223220 is a wasteful number, since it uses less digits than its factorization.

902223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15747 (or 15745 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 902223220 is about 30037.0308119827. The cubic root of 902223220 is about 966.2837291520.

Adding to 902223220 its reverse (22322209), we get a palindrome (924545429).

The spelling of 902223220 in words is "nine hundred two million, two hundred twenty-three thousand, two hundred twenty".