515448020 has 24 divisors (see below), whose sum is σ = 1082868864. Its totient is φ = 206097696.

The previous prime is 515448019. The next prime is 515448047. The reversal of 515448020 is 20844515.

It is a super-2 number, since 2×515448020² = 531373322643840800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90497 + ... + 96023.

It is an arithmetic number, because the mean of its divisors is an integer number (45119536).

Almost surely, 2^515448020 is an apocalyptic number.

It is an amenable number.

515448020 is an abundant number, since it is smaller than the sum of its proper divisors (567420844).

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

515448020 is a wasteful number, since it uses less digits than its factorization.

515448020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10199 (or 10197 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 515448020 is about 22703.4803499375. The cubic root of 515448020 is about 801.7918274467.

The spelling of 515448020 in words is "five hundred fifteen million, four hundred forty-eight thousand, twenty".