1228050720 has 480 divisors, whose sum is σ = 4817857968. Its totient is φ = 292626432.

The previous prime is 1228050679. The next prime is 1228050739. The reversal of 1228050720 is 270508221.

It can be written as a sum of positive squares in 8 ways, for example, as 942981264 + 285069456 = 30708^2 + 16884^2 .

It is a tau number, because it is divible by the number of its divisors (480).

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

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6233662 + ... + 6233858.

Almost surely, 2^1228050720 is an apocalyptic number.

1228050720 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 1228050720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2408928984).

1228050720 is an abundant number, since it is smaller than the sum of its proper divisors (3589807248).

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

1228050720 is a wasteful number, since it uses less digits than its factorization.

1228050720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 1228050720 is about 35043.5546142226. The cubic root of 1228050720 is about 1070.8749706928.

Adding to 1228050720 its reverse (270508221), we get a palindrome (1498558941).

The spelling of 1228050720 in words is "one billion, two hundred twenty-eight million, fifty thousand, seven hundred twenty".