869214528 has 504 divisors, whose sum is σ = 3288475008. Its totient is φ = 217147392.

The previous prime is 869214523. The next prime is 869214601. The reversal of 869214528 is 825412968.

It is a tau number, because it is divible by the number of its divisors (504).

It is a Smith number, since the sum of its digits (45) 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 (869214523) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8438925 + ... + 8439027.

It is an arithmetic number, because the mean of its divisors is an integer number (6524752).

Almost surely, 2^869214528 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 869214528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1644237504).

869214528 is an abundant number, since it is smaller than the sum of its proper divisors (2419260480).

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

869214528 is a wasteful number, since it uses less digits than its factorization.

869214528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 151 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 869214528 is about 29482.4444034073. Note that the first 4 decimals coincide. The cubic root of 869214528 is about 954.3528881853.

It can be divided in two parts, 8692 and 14528, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 869214528 in words is "eight hundred sixty-nine million, two hundred fourteen thousand, five hundred twenty-eight".