89031123720 has 384 divisors, whose sum is σ = 361266048000. Its totient is φ = 18473495040.

The previous prime is 89031123677. The next prime is 89031123737. The reversal of 89031123720 is 2732113098.

89031123720 is a `hidden beast` number, since 8 + 90 + 311 + 237 + 20 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23809611 + ... + 23813349.

It is an arithmetic number, because the mean of its divisors is an integer number (940797000).

Almost surely, 2^89031123720 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 89031123720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180633024000).

89031123720 is an abundant number, since it is smaller than the sum of its proper divisors (272234924280).

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

89031123720 is a wasteful number, since it uses less digits than its factorization.

89031123720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4633 (or 4626 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 89031123720 in words is "eighty-nine billion, thirty-one million, one hundred twenty-three thousand, seven hundred twenty".