1298520 has 48 divisors (see below), whose sum is σ = 4221360. Its totient is φ = 346176.

The previous prime is 1298491. The next prime is 1298537. The reversal of 1298520 is 258921.

1298520 = 23² + 24² + ... + 157².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1444 + ... + 2163.

It is an arithmetic number, because the mean of its divisors is an integer number (87945).

2^1298520 is an apocalyptic number.

1298520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1298520 is an abundant number, since it is smaller than the sum of its proper divisors (2922840).

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

1298520 is a wasteful number, since it uses less digits than its factorization.

1298520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3624 (or 3617 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1298520 is about 1139.5262173377. The cubic root of 1298520 is about 109.0978556183.

It can be divided in two parts, 129 and 8520, that added together give a square (8649 = 93²).

The spelling of 1298520 in words is "one million, two hundred ninety-eight thousand, five hundred twenty".