869265420 has 192 divisors, whose sum is σ = 2735824896. Its totient is φ = 205148160.

The previous prime is 869265413. The next prime is 869265421. The reversal of 869265420 is 24562968.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (869265421) 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, 1169569 + ... + 1170311.

It is an arithmetic number, because the mean of its divisors is an integer number (14249088).

Almost surely, 2^869265420 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 869265420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1367912448).

869265420 is an abundant number, since it is smaller than the sum of its proper divisors (1866559476).

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

869265420 is a wasteful number, since it uses less digits than its factorization.

869265420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 838 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 869265420 is about 29483.3074806746. The cubic root of 869265420 is about 954.3715134221.

The spelling of 869265420 in words is "eight hundred sixty-nine million, two hundred sixty-five thousand, four hundred twenty".