398528268 has 48 divisors (see below), whose sum is σ = 1021413120. Its totient is φ = 120377664.

The previous prime is 398528233. The next prime is 398528293. The reversal of 398528268 is 862825893.

It is a self number, because there is not a number n which added to its sum of digits gives 398528268.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 32755 + ... + 43242.

It is an arithmetic number, because the mean of its divisors is an integer number (21279440).

Almost surely, 2^398528268 is an apocalyptic number.

398528268 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

398528268 is an abundant number, since it is smaller than the sum of its proper divisors (622884852).

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

398528268 is a wasteful number, since it uses less digits than its factorization.

398528268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76046 (or 76044 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The square root of 398528268 is about 19963.1727939223. The cubic root of 398528268 is about 735.9015380059.

The spelling of 398528268 in words is "three hundred ninety-eight million, five hundred twenty-eight thousand, two hundred sixty-eight".