89782740 has 72 divisors (see below), whose sum is σ = 273611520. Its totient is φ = 23830464.

The previous prime is 89782739. The next prime is 89782751. The reversal of 89782740 is 4728798.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41977 + ... + 44063.

It is an arithmetic number, because the mean of its divisors is an integer number (3800160).

Almost surely, 2^89782740 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 89782740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136805760).

89782740 is an abundant number, since it is smaller than the sum of its proper divisors (183828780).

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

89782740 is a wasteful number, since it uses less digits than its factorization.

89782740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341 (or 2336 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 89782740 is about 9475.3754543026. The cubic root of 89782740 is about 447.7795803982.

The spelling of 89782740 in words is "eighty-nine million, seven hundred eighty-two thousand, seven hundred forty".