1198720 has 32 divisors (see below), whose sum is σ = 2867220. Its totient is φ = 479232.

The previous prime is 1198699. The next prime is 1198727. The reversal of 1198720 is 278911.

It can be written as a sum of positive squares in 2 ways, for example, as 1032256 + 166464 = 1016^2 + 408^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (1198727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297 + ... + 1576.

2^1198720 is an apocalyptic number.

1198720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1198720 is an abundant number, since it is smaller than the sum of its proper divisors (1668500).

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

1198720 is an equidigital number, since it uses as much as digits as its factorization.

1198720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892 (or 1880 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1198720 is about 1094.8607217359. The cubic root of 1198720 is about 106.2280600604.

The spelling of 1198720 in words is "one million, one hundred ninety-eight thousand, seven hundred twenty".