515885020 has 48 divisors (see below), whose sum is σ = 1242920448. Its totient is φ = 176189760.

The previous prime is 515885011. The next prime is 515885021. The reversal of 515885020 is 20588515.

It is a happy number.

It is a super-2 number, since 2×515885020² = 532274707720800800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515885021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29815 + ... + 43825.

It is an arithmetic number, because the mean of its divisors is an integer number (25894176).

Almost surely, 2^515885020 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 515885020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (621460224).

515885020 is an abundant number, since it is smaller than the sum of its proper divisors (727035428).

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

515885020 is a wasteful number, since it uses less digits than its factorization.

515885020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14290 (or 14288 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 34.

The square root of 515885020 is about 22713.1023860678. The cubic root of 515885020 is about 802.0183514560.

The spelling of 515885020 in words is "five hundred fifteen million, eight hundred eighty-five thousand, twenty".