42889320 has 96 divisors (see below), whose sum is σ = 140797800. Its totient is φ = 11321856.

The previous prime is 42889307. The next prime is 42889339. The reversal of 42889320 is 2398824.

It can be written as a sum of positive squares in 4 ways, for example, as 42850116 + 39204 = 6546^2 + 198^2 .

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 (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38694 + ... + 39786.

Almost surely, 2^42889320 is an apocalyptic number.

42889320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42889320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70398900).

42889320 is an abundant number, since it is smaller than the sum of its proper divisors (97908480).

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

42889320 is a wasteful number, since it uses less digits than its factorization.

42889320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219 (or 1212 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 42889320 is about 6548.9938158468. The cubic root of 42889320 is about 350.0389616491.

The spelling of 42889320 in words is "forty-two million, eight hundred eighty-nine thousand, three hundred twenty".