1228108580 has 24 divisors (see below), whose sum is σ = 2627691192. Its totient is φ = 481974272.

The previous prime is 1228108573. The next prime is 1228108589. The reversal of 1228108580 is 858018221.

It can be written as a sum of positive squares in 4 ways, for example, as 556676836 + 671431744 = 23594^2 + 25912^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1228108580.

It is not an unprimeable number, because it can be changed into a prime (1228108589) 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, 578237 + ... + 580356.

It is an arithmetic number, because the mean of its divisors is an integer number (109487133).

Almost surely, 2^1228108580 is an apocalyptic number.

1228108580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1228108580 is an abundant number, since it is smaller than the sum of its proper divisors (1399582612).

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

1228108580 is a wasteful number, since it uses less digits than its factorization.

1228108580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158655 (or 1158653 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 1228108580 is about 35044.3801486059. The cubic root of 1228108580 is about 1070.8917886335.

The spelling of 1228108580 in words is "one billion, two hundred twenty-eight million, one hundred eight thousand, five hundred eighty".