89145784 has 32 divisors (see below), whose sum is σ = 205722720. Its totient is φ = 35266176.

The previous prime is 89145781. The next prime is 89145809. The reversal of 89145784 is 48754198.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89145781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60499 + ... + 61954.

It is an arithmetic number, because the mean of its divisors is an integer number (6428835).

Almost surely, 2^89145784 is an apocalyptic number.

It is an amenable number.

89145784 is an abundant number, since it is smaller than the sum of its proper divisors (116576936).

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

89145784 is a wasteful number, since it uses less digits than its factorization.

89145784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122479 (or 122475 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 89145784 is about 9441.7045071322. The cubic root of 89145784 is about 446.7181550012.

The spelling of 89145784 in words is "eighty-nine million, one hundred forty-five thousand, seven hundred eighty-four".