1398560 has 24 divisors (see below), whose sum is σ = 3304476. Its totient is φ = 559360.

The previous prime is 1398559. The next prime is 1398569. The reversal of 1398560 is 658931.

It can be written as a sum of positive squares in 2 ways, for example, as 1317904 + 80656 = 1148^2 + 284^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (1398569) 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, 4211 + ... + 4530.

2^1398560 is an apocalyptic number.

1398560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1398560 is an abundant number, since it is smaller than the sum of its proper divisors (1905916).

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

1398560 is an equidigital number, since it uses as much as digits as its factorization.

1398560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8756 (or 8748 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1398560 is about 1182.6072890017. The cubic root of 1398560 is about 111.8305260009.

The spelling of 1398560 in words is "one million, three hundred ninety-eight thousand, five hundred sixty".