1228469760 has 320 divisors, whose sum is σ = 4988966400. Its totient is φ = 280682496.

The previous prime is 1228469731. The next prime is 1228469771. The reversal of 1228469760 is 679648221.

It is a happy number.

1228469760 is a `hidden beast` number, since 122 + 8 + 469 + 7 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 482571 + ... + 485109.

It is an arithmetic number, because the mean of its divisors is an integer number (15590520).

Almost surely, 2^1228469760 is an apocalyptic number.

1228469760 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 1228469760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2494483200).

1228469760 is an abundant number, since it is smaller than the sum of its proper divisors (3760496640).

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

1228469760 is an equidigital number, since it uses as much as digits as its factorization.

1228469760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2578 (or 2556 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1228469760 is about 35049.5329498126. The cubic root of 1228469760 is about 1070.9967594783.

The spelling of 1228469760 in words is "one billion, two hundred twenty-eight million, four hundred sixty-nine thousand, seven hundred sixty".