513872406 has 24 divisors (see below), whose sum is σ = 1127486880. Its totient is φ = 169122096.

The previous prime is 513872389. The next prime is 513872407. The reversal of 513872406 is 604278315.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513872407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179265 + ... + 182108.

It is an arithmetic number, because the mean of its divisors is an integer number (46978620).

Almost surely, 2^513872406 is an apocalyptic number.

513872406 is an abundant number, since it is smaller than the sum of its proper divisors (613614474).

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

513872406 is a wasteful number, since it uses less digits than its factorization.

513872406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361460 (or 361457 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 513872406 is about 22668.7539578160. The cubic root of 513872406 is about 800.9740250710.

The spelling of 513872406 in words is "five hundred thirteen million, eight hundred seventy-two thousand, four hundred six".