505017930 has 32 divisors (see below), whose sum is σ = 1214083584. Its totient is φ = 134444736.

The previous prime is 505017911. The next prime is 505017937. The reversal of 505017930 is 39710505.

It is a happy number.

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

505017930 is a Rhonda number in base 16.

It is not an unprimeable number, because it can be changed into a prime (505017937) 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, 4344 + ... + 32076.

It is an arithmetic number, because the mean of its divisors is an integer number (37940112).

Almost surely, 2^505017930 is an apocalyptic number.

505017930 is an abundant number, since it is smaller than the sum of its proper divisors (709065654).

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

505017930 is a wasteful number, since it uses less digits than its factorization.

505017930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28350.

The product of its (nonzero) digits is 4725, while the sum is 30.

The square root of 505017930 is about 22472.6039879672. The cubic root of 505017930 is about 796.3468487077.

The spelling of 505017930 in words is "five hundred five million, seventeen thousand, nine hundred thirty".