1228815000 has 480 divisors, whose sum is σ = 4912427520. Its totient is φ = 271584000.

The previous prime is 1228814989. The next prime is 1228815011. The reversal of 1228815000 is 5188221.

It is an interprime number because it is at equal distance from previous prime (1228814989) and next prime (1228815011).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 14804959 + ... + 14805041.

It is an arithmetic number, because the mean of its divisors is an integer number (10234224).

Almost surely, 2^1228815000 is an apocalyptic number.

1228815000 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 1228815000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2456213760).

1228815000 is an abundant number, since it is smaller than the sum of its proper divisors (3683612520).

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

1228815000 is a wasteful number, since it uses less digits than its factorization.

1228815000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 1228815000 is about 35054.4576338017. The cubic root of 1228815000 is about 1071.0970784012.

The spelling of 1228815000 in words is "one billion, two hundred twenty-eight million, eight hundred fifteen thousand".