1228704180 has 72 divisors (see below), whose sum is σ = 3781587936. Its totient is φ = 297865920.

The previous prime is 1228704119. The next prime is 1228704181. The reversal of 1228704180 is 814078221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228704181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77362 + ... + 91881.

Almost surely, 2^1228704180 is an apocalyptic number.

1228704180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1228704180 is an abundant number, since it is smaller than the sum of its proper divisors (2552883756).

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

1228704180 is a wasteful number, since it uses less digits than its factorization.

1228704180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169277 (or 169264 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 1228704180 is about 35052.8769147412. The cubic root of 1228704180 is about 1071.0648786676.

The spelling of 1228704180 in words is "one billion, two hundred twenty-eight million, seven hundred four thousand, one hundred eighty".