89547840 has 336 divisors, whose sum is σ = 342351360. Its totient is φ = 21381120.

The previous prime is 89547797. The next prime is 89547841. The reversal of 89547840 is 4874598.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (89547841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1517731 + ... + 1517789.

Almost surely, 2^89547840 is an apocalyptic number.

89547840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89547840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171175680).

89547840 is an abundant number, since it is smaller than the sum of its proper divisors (252803520).

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

89547840 is a wasteful number, since it uses less digits than its factorization.

89547840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 89547840 is about 9462.9720489918. The cubic root of 89547840 is about 447.3887284074.

Adding to 89547840 its product of nonzero digits (322560), we get a square (89870400 = 9480²).

The spelling of 89547840 in words is "eighty-nine million, five hundred forty-seven thousand, eight hundred forty".