98021840 has 40 divisors (see below), whose sum is σ = 260459520. Its totient is φ = 33607296.

The previous prime is 98021821. The next prime is 98021863. The reversal of 98021840 is 4812089.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×98021840² = 19216562233971200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 98021797 and 98021806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86960 + ... + 88079.

It is an arithmetic number, because the mean of its divisors is an integer number (6511488).

Almost surely, 2^98021840 is an apocalyptic number.

It is an amenable number.

98021840 is an abundant number, since it is smaller than the sum of its proper divisors (162437680).

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

98021840 is a wasteful number, since it uses less digits than its factorization.

98021840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175059 (or 175053 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 98021840 is about 9900.5979617395. The cubic root of 98021840 is about 461.0778756173.

The spelling of 98021840 in words is "ninety-eight million, twenty-one thousand, eight hundred forty".