512265816 has 64 divisors (see below), whose sum is σ = 1427695200. Its totient is φ = 170187264.

The previous prime is 512265797. The next prime is 512265823. The reversal of 512265816 is 618562215.

512265816 is a `hidden beast` number, since 51 + 2 + 26 + 581 + 6 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63820 + ... + 71396.

Almost surely, 2^512265816 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 512265816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713847600).

512265816 is an abundant number, since it is smaller than the sum of its proper divisors (915429384).

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

512265816 is a wasteful number, since it uses less digits than its factorization.

512265816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7905 (or 7895 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 512265816 is about 22633.2899950493. The cubic root of 512265816 is about 800.1384218812.

The spelling of 512265816 in words is "five hundred twelve million, two hundred sixty-five thousand, eight hundred sixteen".