398530512 has 30 divisors (see below), whose sum is σ = 1115332322. Its totient is φ = 132843456.

The previous prime is 398530511. The next prime is 398530523. The reversal of 398530512 is 215035893.

398530512 is a `hidden beast` number, since 3 + 98 + 53 + 0 + 512 = 666.

It can be written as a sum of positive squares in only one way, i.e., 397763136 + 767376 = 19944^2 + 876^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398530511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1383643 + ... + 1383930.

Almost surely, 2^398530512 is an apocalyptic number.

It is an amenable number.

398530512 is an abundant number, since it is smaller than the sum of its proper divisors (716801810).

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

398530512 is a wasteful number, since it uses less digits than its factorization.

398530512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767587 (or 2767578 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 398530512 is about 19963.2289973341. The cubic root of 398530512 is about 735.9029192211.

The spelling of 398530512 in words is "three hundred ninety-eight million, five hundred thirty thousand, five hundred twelve".