1298498400 has 108 divisors (see below), whose sum is σ = 4578855372. Its totient is φ = 346264320.

The previous prime is 1298498389. The next prime is 1298498401. The reversal of 1298498400 is 48948921.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298498401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 82974 + ... + 97373.

It is an arithmetic number, because the mean of its divisors is an integer number (42396809).

Almost surely, 2^1298498400 is an apocalyptic number.

1298498400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1298498400 is an abundant number, since it is smaller than the sum of its proper divisors (3280356972).

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

1298498400 is a wasteful number, since it uses less digits than its factorization.

1298498400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180373 (or 180357 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1298498400 is about 36034.6832926280. The cubic root of 1298498400 is about 1090.9725069195.

The spelling of 1298498400 in words is "one billion, two hundred ninety-eight million, four hundred ninety-eight thousand, four hundred".