513402330 has 32 divisors (see below), whose sum is σ = 1408189824. Its totient is φ = 117349056.

The previous prime is 513402293. The next prime is 513402347. The reversal of 513402330 is 33204315.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 513402297 and 513402306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1222177 + ... + 1222596.

It is an arithmetic number, because the mean of its divisors is an integer number (44005932).

Almost surely, 2^513402330 is an apocalyptic number.

513402330 is an abundant number, since it is smaller than the sum of its proper divisors (894787494).

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

513402330 is a wasteful number, since it uses less digits than its factorization.

513402330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444790.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 513402330 is about 22658.3832168140. The cubic root of 513402330 is about 800.7297144021.

Adding to 513402330 its reverse (33204315), we get a palindrome (546606645).

The spelling of 513402330 in words is "five hundred thirteen million, four hundred two thousand, three hundred thirty".