1198742720 has 224 divisors, whose sum is σ = 3434827776. Its totient is φ = 389836800.

The previous prime is 1198742719. The next prime is 1198742731. The reversal of 1198742720 is 272478911.

It is a tau number, because it is divible by the number of its divisors (224).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4235699 + ... + 4235981.

Almost surely, 2^1198742720 is an apocalyptic number.

1198742720 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 1198742720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1717413888).

1198742720 is an abundant number, since it is smaller than the sum of its proper divisors (2236085056).

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

1198742720 is a wasteful number, since it uses less digits than its factorization.

1198742720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 1198742720 is about 34622.8641218487. The cubic root of 1198742720 is about 1062.2873118912.

The spelling of 1198742720 in words is "one billion, one hundred ninety-eight million, seven hundred forty-two thousand, seven hundred twenty".