89161380 has 216 divisors, whose sum is σ = 343586880. Its totient is φ = 18506880.

The previous prime is 89161367. The next prime is 89161427. The reversal of 89161380 is 8316198.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 96561 + ... + 97479.

It is an arithmetic number, because the mean of its divisors is an integer number (1590680).

Almost surely, 2^89161380 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 89161380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171793440).

89161380 is an abundant number, since it is smaller than the sum of its proper divisors (254425500).

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

89161380 is a wasteful number, since it uses less digits than its factorization.

89161380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959 (or 947 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 89161380 is about 9442.5303812061. The cubic root of 89161380 is about 446.7442045042.

It can be divided in two parts, 8916 and 1380, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 89161380 in words is "eighty-nine million, one hundred sixty-one thousand, three hundred eighty".