524368640 has 72 divisors (see below), whose sum is σ = 1264810848. Its totient is φ = 208281600.

The previous prime is 524368619. The next prime is 524368643. The reversal of 524368640 is 46863425.

It is a junction number, because it is equal to n+sod(n) for n = 524368594 and 524368603.

It is not an unprimeable number, because it can be changed into a prime (524368643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191924 + ... + 194636.

Almost surely, 2^524368640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 524368640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (632405424).

524368640 is an abundant number, since it is smaller than the sum of its proper divisors (740442208).

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

524368640 is a wasteful number, since it uses less digits than its factorization.

524368640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2885 (or 2871 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 524368640 is about 22899.0969254248. The cubic root of 524368640 is about 806.3908109728.

The spelling of 524368640 in words is "five hundred twenty-four million, three hundred sixty-eight thousand, six hundred forty".