504708138 has 128 divisors (see below), whose sum is σ = 1308026880. Its totient is φ = 142560000.

The previous prime is 504708109. The next prime is 504708163. The reversal of 504708138 is 831807405.

504708138 is a `hidden beast` number, since 50 + 470 + 8 + 138 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1524633 + ... + 1524963.

It is an arithmetic number, because the mean of its divisors is an integer number (10218960).

Almost surely, 2^504708138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 504708138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (654013440).

504708138 is an abundant number, since it is smaller than the sum of its proper divisors (803318742).

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

504708138 is a wasteful number, since it uses less digits than its factorization.

504708138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 504708138 is about 22465.7102714337. The cubic root of 504708138 is about 796.1839816554.

The spelling of 504708138 in words is "five hundred four million, seven hundred eight thousand, one hundred thirty-eight".