1398610208 has 48 divisors (see below), whose sum is σ = 2826835200. Its totient is φ = 680841216.

The previous prime is 1398610207. The next prime is 1398610271. The reversal of 1398610208 is 8020168931.

It is a super-2 number, since 2×1398610208² = 3912221027843606528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1398610201) 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 7 ways as a sum of consecutive naturals, for example, 296960 + ... + 301632.

It is an arithmetic number, because the mean of its divisors is an integer number (58892400).

Almost surely, 2^1398610208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1398610208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1413417600).

1398610208 is an abundant number, since it is smaller than the sum of its proper divisors (1428224992).

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

1398610208 is a wasteful number, since it uses less digits than its factorization.

1398610208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929 (or 4921 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1398610208 is about 37397.9973795389. The cubic root of 1398610208 is about 1118.3186421539.

The spelling of 1398610208 in words is "one billion, three hundred ninety-eight million, six hundred ten thousand, two hundred eight".