98587440 has 240 divisors, whose sum is σ = 391213056. Its totient is φ = 21772800.

The previous prime is 98587427. The next prime is 98587441. The reversal of 98587440 is 4478589.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is not an unprimeable number, because it can be changed into a prime (98587441) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 155925 + ... + 156555.

Almost surely, 2^98587440 is an apocalyptic number.

98587440 is a gapful number since it is divisible by the number (90) 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 98587440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195606528).

98587440 is an abundant number, since it is smaller than the sum of its proper divisors (292625616).

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

98587440 is a wasteful number, since it uses less digits than its factorization.

98587440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688 (or 679 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 98587440 is about 9929.1208070000. The cubic root of 98587440 is about 461.9630037278.

The spelling of 98587440 in words is "ninety-eight million, five hundred eighty-seven thousand, four hundred forty".