512869890 has 128 divisors (see below), whose sum is σ = 1393459200. Its totient is φ = 119934720.

The previous prime is 512869879. The next prime is 512869891. The reversal of 512869890 is 98968215.

It is a happy number.

It is a super-2 number, since 2×512869890² = 526071048137224200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (512869891) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 712951 + ... + 713669.

It is an arithmetic number, because the mean of its divisors is an integer number (10886400).

Almost surely, 2^512869890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 512869890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (696729600).

512869890 is an abundant number, since it is smaller than the sum of its proper divisors (880589310).

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

512869890 is a wasteful number, since it uses less digits than its factorization.

512869890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832.

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 512869890 is about 22646.6308752538. The cubic root of 512869890 is about 800.4528113623.

The spelling of 512869890 in words is "five hundred twelve million, eight hundred sixty-nine thousand, eight hundred ninety".