89628378 has 128 divisors (see below), whose sum is σ = 229146624. Its totient is φ = 22809600.

The previous prime is 89628361. The next prime is 89628397. The reversal of 89628378 is 87382698.

It is a super-2 number, since 2×89628378² = 16066492285821768, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 89628378.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1227750 + ... + 1227822.

It is an arithmetic number, because the mean of its divisors is an integer number (1790208).

Almost surely, 2^89628378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89628378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114573312).

89628378 is an abundant number, since it is smaller than the sum of its proper divisors (139518246).

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

89628378 is a wasteful number, since it uses less digits than its factorization.

89628378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180.

The product of its digits is 1161216, while the sum is 51.

The square root of 89628378 is about 9467.2265210039. The cubic root of 89628378 is about 447.5228131478.

The spelling of 89628378 in words is "eighty-nine million, six hundred twenty-eight thousand, three hundred seventy-eight".