98145840 has 160 divisors (see below), whose sum is σ = 332478720. Its totient is φ = 23804928.

The previous prime is 98145781. The next prime is 98145847. The reversal of 98145840 is 4854189.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (98145847) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 258771 + ... + 259149.

It is an arithmetic number, because the mean of its divisors is an integer number (2077992).

Almost surely, 2^98145840 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 98145840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166239360).

98145840 is an abundant number, since it is smaller than the sum of its proper divisors (234332880).

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

98145840 is a wasteful number, since it uses less digits than its factorization.

98145840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 98145840 is about 9906.8582305391. The cubic root of 98145840 is about 461.2722185814.

The spelling of 98145840 in words is "ninety-eight million, one hundred forty-five thousand, eight hundred forty".