774741220 has 36 divisors (see below), whose sum is σ = 1788313212. Its totient is φ = 281723200.

The previous prime is 774741217. The next prime is 774741259. The reversal of 774741220 is 22147477.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 477247716 + 297493504 = 21846^2 + 17248^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157651 + ... + 162490.

It is an arithmetic number, because the mean of its divisors is an integer number (49675367).

Almost surely, 2^774741220 is an apocalyptic number.

It is an amenable number.

774741220 is an abundant number, since it is smaller than the sum of its proper divisors (1013571992).

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

774741220 is a wasteful number, since it uses less digits than its factorization.

774741220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320172 (or 320159 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 34.

The square root of 774741220 is about 27834.1736000910. The cubic root of 774741220 is about 918.4430265735.

Adding to 774741220 its reverse (22147477), we get a palindrome (796888697).

The spelling of 774741220 in words is "seven hundred seventy-four million, seven hundred forty-one thousand, two hundred twenty".