515233830 has 32 divisors (see below), whose sum is σ = 1301644800. Its totient is φ = 130164192.

The previous prime is 515233801. The next prime is 515233837. The reversal of 515233830 is 38332515.

515233830 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515233837) 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, 451390 + ... + 452529.

It is an arithmetic number, because the mean of its divisors is an integer number (40676400).

Almost surely, 2^515233830 is an apocalyptic number.

515233830 is an abundant number, since it is smaller than the sum of its proper divisors (786410970).

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

515233830 is a wasteful number, since it uses less digits than its factorization.

515233830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903948.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 515233830 is about 22698.7627416122. The cubic root of 515233830 is about 801.6807528228.

The spelling of 515233830 in words is "five hundred fifteen million, two hundred thirty-three thousand, eight hundred thirty".