505148730 has 32 divisors (see below), whose sum is σ = 1213012800. Its totient is φ = 134633472.

The previous prime is 505148719. The next prime is 505148731. The reversal of 505148730 is 37841505.

It is a super-2 number, since 2×505148730² = 510350478841225800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 505148691 and 505148700.

It is not an unprimeable number, because it can be changed into a prime (505148731) 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, 74106 + ... + 80634.

It is an arithmetic number, because the mean of its divisors is an integer number (37906650).

Almost surely, 2^505148730 is an apocalyptic number.

505148730 is an abundant number, since it is smaller than the sum of its proper divisors (707864070).

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

505148730 is a wasteful number, since it uses less digits than its factorization.

505148730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9118.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 505148730 is about 22475.5140096951. The cubic root of 505148730 is about 796.4155942381.

The spelling of 505148730 in words is "five hundred five million, one hundred forty-eight thousand, seven hundred thirty".