1198860520 has 128 divisors (see below), whose sum is σ = 3271726080. Its totient is φ = 389376000.

The previous prime is 1198860497. The next prime is 1198860521. The reversal of 1198860520 is 250688911.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (1198860521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173940 + ... + 180700.

It is an arithmetic number, because the mean of its divisors is an integer number (25560360).

Almost surely, 2^1198860520 is an apocalyptic number.

1198860520 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 1198860520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1635863040).

1198860520 is an abundant number, since it is smaller than the sum of its proper divisors (2072865560).

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

1198860520 is a wasteful number, since it uses less digits than its factorization.

1198860520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6827 (or 6823 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 1198860520 is about 34624.5652680290. The cubic root of 1198860520 is about 1062.3221076108.

The spelling of 1198860520 in words is "one billion, one hundred ninety-eight million, eight hundred sixty thousand, five hundred twenty".