505738740 has 48 divisors (see below), whose sum is σ = 1524999168. Its totient is φ = 124489344.

The previous prime is 505738699. The next prime is 505738757. The reversal of 505738740 is 47837505.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323412 + ... + 324971.

It is an arithmetic number, because the mean of its divisors is an integer number (31770816).

Almost surely, 2^505738740 is an apocalyptic number.

It is an amenable number.

505738740 is an abundant number, since it is smaller than the sum of its proper divisors (1019260428).

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

505738740 is a wasteful number, since it uses less digits than its factorization.

505738740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648408 (or 648406 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 505738740 is about 22488.6357967752. The cubic root of 505738740 is about 796.7255427817.

The spelling of 505738740 in words is "five hundred five million, seven hundred thirty-eight thousand, seven hundred forty".