506778528 has 24 divisors (see below), whose sum is σ = 1330293888. Its totient is φ = 168926144.

The previous prime is 506778497. The next prime is 506778533. The reversal of 506778528 is 825877605.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2639376 + ... + 2639567.

It is an arithmetic number, because the mean of its divisors is an integer number (55428912).

Almost surely, 2^506778528 is an apocalyptic number.

It is an amenable number.

506778528 is an abundant number, since it is smaller than the sum of its proper divisors (823515360).

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

506778528 is a wasteful number, since it uses less digits than its factorization.

506778528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5278956 (or 5278948 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 48.

The square root of 506778528 is about 22511.7420027860. The cubic root of 506778528 is about 797.2711858835.

The spelling of 506778528 in words is "five hundred six million, seven hundred seventy-eight thousand, five hundred twenty-eight".