1228047480 has 160 divisors (see below), whose sum is σ = 4502971440. Its totient is φ = 297699840.

The previous prime is 1228047461. The next prime is 1228047481. The reversal of 1228047480 is 847408221.

It is a super-2 number, since 2×1228047480² = 3016201226268700800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228047481) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18412 + ... + 52868.

Almost surely, 2^1228047480 is an apocalyptic number.

1228047480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228047480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2251485720).

1228047480 is an abundant number, since it is smaller than the sum of its proper divisors (3274923960).

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

1228047480 is a wasteful number, since it uses less digits than its factorization.

1228047480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34491 (or 34478 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 1228047480 is about 35043.5083860050. The cubic root of 1228047480 is about 1070.8740289190.

The spelling of 1228047480 in words is "one billion, two hundred twenty-eight million, forty-seven thousand, four hundred eighty".