1228802400 has 756 divisors, whose sum is σ = 5353649532. Its totient is φ = 274337280.

The previous prime is 1228802387. The next prime is 1228802417. The reversal of 1228802400 is 42088221.

It is a tau number, because it is divible by the number of its divisors (756).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 125 ways as a sum of consecutive naturals, for example, 28576779 + ... + 28576821.

It is an arithmetic number, because the mean of its divisors is an integer number (7081547).

Almost surely, 2^1228802400 is an apocalyptic number.

1228802400 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 1228802400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2676824766).

1228802400 is an abundant number, since it is smaller than the sum of its proper divisors (4124847132).

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

1228802400 is an equidigital number, since it uses as much as digits as its factorization.

1228802400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 1228802400 is about 35054.2779129738. The cubic root of 1228802400 is about 1071.0934174570.

The spelling of 1228802400 in words is "one billion, two hundred twenty-eight million, eight hundred two thousand, four hundred".