520690248 has 128 divisors (see below), whose sum is σ = 1573084800. Its totient is φ = 158623488.

The previous prime is 520690241. The next prime is 520690253. The reversal of 520690248 is 842096025.

It is a happy number.

520690248 is a `hidden beast` number, since 520 + 6 + 90 + 2 + 48 = 666.

It is a super-2 number, since 2×520690248² = 542236668724603008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (520690241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299590 + ... + 301322.

It is an arithmetic number, because the mean of its divisors is an integer number (12289725).

Almost surely, 2^520690248 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 520690248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (786542400).

520690248 is an abundant number, since it is smaller than the sum of its proper divisors (1052394552).

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

520690248 is a wasteful number, since it uses less digits than its factorization.

520690248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868 (or 1858 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 520690248 is about 22818.6381714598. The cubic root of 520690248 is about 804.5008018257.

The spelling of 520690248 in words is "five hundred twenty million, six hundred ninety thousand, two hundred forty-eight".