398305068 has 24 divisors (see below), whose sum is σ = 1062147072. Its totient is φ = 113801424.

The previous prime is 398305057. The next prime is 398305073. The reversal of 398305068 is 860503893.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2370780 + ... + 2370947.

It is an arithmetic number, because the mean of its divisors is an integer number (44256128).

Almost surely, 2^398305068 is an apocalyptic number.

It is an amenable number.

398305068 is an abundant number, since it is smaller than the sum of its proper divisors (663842004).

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

398305068 is a wasteful number, since it uses less digits than its factorization.

398305068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4741741 (or 4741739 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 398305068 is about 19957.5817172322. The cubic root of 398305068 is about 735.7641291862.

The spelling of 398305068 in words is "three hundred ninety-eight million, three hundred five thousand, sixty-eight".