89256078520 has 128 divisors (see below), whose sum is σ = 245945548800. Its totient is φ = 28454823936.

The previous prime is 89256078497. The next prime is 89256078521. The reversal of 89256078520 is 2587065298.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89256078521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 282121 + ... + 508039.

It is an arithmetic number, because the mean of its divisors is an integer number (1921449600).

Almost surely, 2^89256078520 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 89256078520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122972774400).

89256078520 is an abundant number, since it is smaller than the sum of its proper divisors (156689470280).

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

89256078520 is a wasteful number, since it uses less digits than its factorization.

89256078520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226037 (or 226033 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 89256078520 in words is "eighty-nine billion, two hundred fifty-six million, seventy-eight thousand, five hundred twenty".