513512340 has 48 divisors (see below), whose sum is σ = 1568548800. Its totient is φ = 124487680.

The previous prime is 513512339. The next prime is 513512347. The reversal of 513512340 is 43215315.

It is a self number, because there is not a number n which added to its sum of digits gives 513512340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513512347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388365 + ... + 389684.

It is an arithmetic number, because the mean of its divisors is an integer number (32678100).

Almost surely, 2^513512340 is an apocalyptic number.

It is an amenable number.

513512340 is an abundant number, since it is smaller than the sum of its proper divisors (1055036460).

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

513512340 is a wasteful number, since it uses less digits than its factorization.

513512340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778072 (or 778070 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 513512340 is about 22660.8106651108. The cubic root of 513512340 is about 800.7869028095.

Adding to 513512340 its reverse (43215315), we get a palindrome (556727655).

The spelling of 513512340 in words is "five hundred thirteen million, five hundred twelve thousand, three hundred forty".