1398930720 has 96 divisors (see below), whose sum is σ = 4807252800. Its totient is φ = 339133440.

The previous prime is 1398930713. The next prime is 1398930773. The reversal of 1398930720 is 270398931.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127195 + ... + 137754.

It is an arithmetic number, because the mean of its divisors is an integer number (50075550).

Almost surely, 2^1398930720 is an apocalyptic number.

1398930720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1398930720 is an abundant number, since it is smaller than the sum of its proper divisors (3408322080).

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

1398930720 is a wasteful number, since it uses less digits than its factorization.

1398930720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264978 (or 264970 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 1398930720 is about 37402.2822833046. The cubic root of 1398930720 is about 1118.4040619909.

The spelling of 1398930720 in words is "one billion, three hundred ninety-eight million, nine hundred thirty thousand, seven hundred twenty".