1228407120 has 200 divisors, whose sum is σ = 4296305376. Its totient is φ = 325285632.

The previous prime is 1228407091. The next prime is 1228407121. The reversal of 1228407120 is 217048221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228407121) 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, 1055659 + ... + 1056821.

Almost surely, 2^1228407120 is an apocalyptic number.

1228407120 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 1228407120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2148152688).

1228407120 is an abundant number, since it is smaller than the sum of its proper divisors (3067898256).

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

1228407120 is a wasteful number, since it uses less digits than its factorization.

1228407120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351 (or 1336 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 1228407120 is about 35048.6393459147. The cubic root of 1228407120 is about 1070.9785556990.

The spelling of 1228407120 in words is "one billion, two hundred twenty-eight million, four hundred seven thousand, one hundred twenty".