513678452 has 72 divisors (see below), whose sum is σ = 1098377280. Its totient is φ = 205856640.

The previous prime is 513678449. The next prime is 513678467. The reversal of 513678452 is 254876315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 899327 + ... + 899897.

It is an arithmetic number, because the mean of its divisors is an integer number (15255240).

Almost surely, 2^513678452 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 513678452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (549188640).

513678452 is an abundant number, since it is smaller than the sum of its proper divisors (584698828).

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

513678452 is a wasteful number, since it uses less digits than its factorization.

513678452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 688 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The square root of 513678452 is about 22664.4755509586. The cubic root of 513678452 is about 800.8732402176.

The spelling of 513678452 in words is "five hundred thirteen million, six hundred seventy-eight thousand, four hundred fifty-two".