89389278 has 64 divisors (see below), whose sum is σ = 220343040. Its totient is φ = 26632800.

The previous prime is 89389219. The next prime is 89389297. The reversal of 89389278 is 87298398.

It is a super-2 number, since 2×89389278² = 15980886042722568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 35001 + ... + 37467.

It is an arithmetic number, because the mean of its divisors is an integer number (3442860).

Almost surely, 2^89389278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89389278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110171520).

89389278 is an abundant number, since it is smaller than the sum of its proper divisors (130953762).

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

89389278 is a wasteful number, since it uses less digits than its factorization.

89389278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550 (or 2544 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 89389278 is about 9454.5903137048. The cubic root of 89389278 is about 447.1245092549.

The spelling of 89389278 in words is "eighty-nine million, three hundred eighty-nine thousand, two hundred seventy-eight".