1298486240 has 24 divisors (see below), whose sum is σ = 3067674120. Its totient is φ = 519394432.

The previous prime is 1298486221. The next prime is 1298486261. The reversal of 1298486240 is 426848921.

It is a junction number, because it is equal to n+sod(n) for n = 1298486191 and 1298486200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4057610 + ... + 4057929.

It is an arithmetic number, because the mean of its divisors is an integer number (127819755).

Almost surely, 2^1298486240 is an apocalyptic number.

1298486240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1298486240 is an abundant number, since it is smaller than the sum of its proper divisors (1769187880).

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

1298486240 is an equidigital number, since it uses as much as digits as its factorization.

1298486240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8115554 (or 8115546 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 1298486240 is about 36034.5145658992. The cubic root of 1298486240 is about 1090.9691013789.

The spelling of 1298486240 in words is "one billion, two hundred ninety-eight million, four hundred eighty-six thousand, two hundred forty".