98205840 has 60 divisors (see below), whose sum is σ = 329810364. Its totient is φ = 26188032.

The previous prime is 98205797. The next prime is 98205841. The reversal of 98205840 is 4850289.

It can be written as a sum of positive squares in 2 ways, for example, as 21678336 + 76527504 = 4656^2 + 8748^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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

It is a junction number, because it is equal to n+sod(n) for n = 98205795 and 98205804.

It is not an unprimeable number, because it can be changed into a prime (98205841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67479 + ... + 68918.

Almost surely, 2^98205840 is an apocalyptic number.

98205840 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

98205840 is an abundant number, since it is smaller than the sum of its proper divisors (231604524).

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

98205840 is a wasteful number, since it uses less digits than its factorization.

98205840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136416 (or 136407 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 98205840 is about 9909.8859731079. The cubic root of 98205840 is about 461.3661967375.

The spelling of 98205840 in words is "ninety-eight million, two hundred five thousand, eight hundred forty".