512170020 has 96 divisors (see below), whose sum is σ = 1597760640. Its totient is φ = 136206720.

The previous prime is 512170007. The next prime is 512170031. The reversal of 512170020 is 20071215.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 512169975 and 512170002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238150 + ... + 240290.

It is an arithmetic number, because the mean of its divisors is an integer number (16643340).

Almost surely, 2^512170020 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 512170020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798880320).

512170020 is an abundant number, since it is smaller than the sum of its proper divisors (1085590620).

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

512170020 is a wasteful number, since it uses less digits than its factorization.

512170020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602 (or 2594 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 512170020 is about 22631.1736328455. The cubic root of 512170020 is about 800.0885422833.

The spelling of 512170020 in words is "five hundred twelve million, one hundred seventy thousand, twenty".